Potential and Kinetic Energy PowerPoint

3. -Nice neat notes that are legible and use indentations when appropriate. -Example of indent. -Skip a line between topics -Make visuals clear and well drawn. Please label. Resistance Arm Effort Arm

4. • RED SLIDE: These are notes that are very important and should be recorded in your science journal. • BLACK SLIDE: Pay attention, follow directions, complete projects as described and answer required questions neatly. Copyright © 2010 Ryan P. Murphy

7. • http://sciencepowerpoint.com/

8. • Available worksheet, PE, KE, and ME.

14. Potential Enegy (PE) Kinetic Energy (KE)

40. • Video Link! (Optional) Energy changes, Potential and Kinetic Energy. – http://www.youtube.com/watch?v=Jnj8mc04r9E

46.  PE = mgh  PE = Energy (in Joules)  m = mass (in kilograms)  g = gravitational acceleration of the earth (9.8 m/s²)  h = height above Earth's surface (in meters) Copyright © 2010 Ryan P. Murphy

47.  PE = mgh  PE = Energy (in Joules)  m = mass (in kilograms)  g = gravitational acceleration of the earth (9.8 m/s²)  h = height above Earth's surface (in meters) Learn more about Potential Energy at… http://www.physicsclassroom.com/clas s/energy/u5l1b.cfm Copyright © 2010 Ryan P. Murphy

67. • Activity! Bungee Jumping!

68. • Activity! But we will use an egg. Egg

69. • Activity! and It’s not a real egg, it’s plastic.

70. • Activity! …and instead of candy...

71. • Activity! …and instead of candy...it’s washers

72. Demonstration of bungee jump gone wrong by teacher. This is not what you want to happen to your plastic egg.

74. Paperclip to Hook on ceiling

75. Paperclip to Hook on ceiling String (You create length)

76. Paperclip to Hook on ceiling String (You create length) Elastic

77. Paperclip to Hook on ceiling String (You create length) 2 Washers Elastic

78. Paperclip to Hook on ceiling String (You create length) 2 Washers Elastic Egg

84. • Bungee Jumping Egg Available Worksheet

85. Demonstration of bungee jump gone wrong by teacher. This is not what you want to happen to your plastic egg.

86. • The five values that should be considered before determining the fate of the egg. – Height of the jump 2.75 m / 9 ft. – Length of unstretched elastic band 80 cm / 2’8” – Spring constant (How much the band stretches) – Mass of the egg and washers – Length of rope. – Height of jump (h) minus the separation distance (d) between the egg and ground including the stretched elastic.

87. • The five values that should be considered before determining the fate of the egg. – Height of the jump 2.75 m / 9 ft. – Length of unstretched elastic band 80 cm / 2’8” – Spring constant (How much the band stretches) – Mass of the egg and washers – Length of rope. – Height of jump (h) minus the separation distance (d) between the egg and ground including the stretched elastic.

88. • The five values that should be considered before determining the fate of the egg. – Height of the jump 2.75 m / 9 ft. – Length of elastic band 80 cm / 2’8” ish. – Spring constant (How much the band stretches) – Mass of the egg and washers – Length of rope. – Height of jump (h) minus the separation distance (d) between the egg and ground including the stretched elastic.

89. • The five values that should be considered before determining the fate of the egg. – Height of the jump 2.75 m / 9 ft. – Length of elastic band 80 cm / 2’8” ish. – Spring constant (How much the band stretches). – Mass of the egg and washers – Length of rope. – Height of jump (h) minus the separation distance (d) between the egg and ground including the stretched elastic.

90. • The five values that should be considered before determining the fate of the egg. – Height of the jump 2.75 m / 9 ft. – Length of elastic band 80 cm / 2’8” ish. – Spring constant (How much the band stretches). – Mass of the egg and washers Constant: Changeless / unvarying – Length of rope. in of jump – Height nature (h) minus the separation distance (d) between the egg and ground including the stretched elastic.

91. • The five values that should be considered before determining the fate of the egg. – Height of the jump 2.75 m / 9 ft. – Length of elastic band 80 cm / 2’8” ish. – Spring constant (How much the band stretches). – Mass of the egg and washers. – Length of rope. – Height of jump (h) minus the separation distance (d) between the egg and ground including the stretched elastic.

92. • The five values that should be considered before determining the fate of the egg. – Height of the jump 2.75 m / 9 ft. – Length of elastic band 80 cm / 2’8” ish. – Spring constant (How much the band stretches). – Mass of the egg and washers. – Length of rope.  Mass: Amount of matter in an – Height of jump (h) minus the separation distance (d) between the egg and ground object (Weight on Earth) including the stretched elastic.

93. • The five values that should be considered before determining the fate of the egg. – Height of the jump 2.75 m / 9 ft. – Length of elastic band 80 cm / 2’8” ish. – Spring constant (How much the band stretches). – Mass of the egg and washers. – Length of string that you determine. – Height of jump (h) minus the separation distance (d) between the egg and ground including the stretched elastic.

94. • The five values that should be considered before determining the fate of the egg. – Height of the jump 2.75 m / 9 ft. – Length of elastic band 80 cm / 2’8” ish. – Spring constant (How much the band stretches). – Mass of the egg and washers. – Length of string that you determine. – Height of jump (h) minus the separation distance (d) between the egg and ground including the stretched elastic.

95. • Activity! Instructions

96. • Activity! Instructions • Goal: For the egg to fall from the ceiling and come within 10 cm of the floor without crashing.

97. • Activity! Instructions • Goal: For the egg to fall from the ceiling and come within 10 cm of the floor without crashing. • Everyone has the same amount of bungee material (Elastic / Rubber Bands)

98. • Activity! Instructions • Goal: For the egg to fall from the ceiling and come within 10 cm of the floor without crashing. • Everyone has the same amount of bungee material (Elastic / Rubber Bands) • You must measure the correct length of rope to land within the 10 cm range.

99. • Activity! Instructions • Goal: For the egg to fall from the ceiling and come within 10 cm of the floor without crashing. • Everyone has the same amount of bungee material (Elastic / Rubber Bands) • You must measure the correct length of rope to land within the 10 cm range. • You are not allowed any test jumps. You must determine rope length using the provided information.

100. • Activity! Instructions • Goal: For the egg to fall from the ceiling and come within 10 cm of the floor without crashing. • Everyone has the same amount of bungee material (Elastic / Rubber Bands) • You must measure the correct length of rope to land within the 10 cm range. • You are not allowed any test jumps. You must determine rope length using the provided information. • You may begin when given the materials and use the information on the next slide.

101. • • • • • • • • Activity! Information Height 2.75 m / 9ft Paperclip 5 cm? Hook 5 cm? Elastic not stretched 80 cm / 2’8” ish. Mass of egg and 2 washers = 32grams 32g x .001 =.032kg Stretched Elastic = ?

102. • • • • • • • • • Activity! Information Height 2.75 m / 9ft Paperclip 5 cm? Hook 5 cm? Elastic not stretched 80 cm / 2’8” ish. Mass of egg and 2 washers = 32grams 32g x .001 =.032kg Stretched Elastic = ? Potential Energy = PE = mgh

103. • • • • • • • • • • Activity! Information Height 2.75 m / 9ft Paperclip 5 cm? Hook 5 cm? Elastic not stretched 80 cm / 2’8” ish. Mass of egg and 2 washers = 32grams 32g x .001 =.032kg Stretched Elastic = ? Potential Energy = PE = mgh PE is in Joules

104. • • • • • • • • • • Activity! Information Height 2.75 m / 9ft Paperclip 5 cm? Hook 5 cm? Elastic not stretched 80 cm / 2’8” ish. Mass of egg and 2 washers = 32grams 32g x .001 =.032kg Stretched Elastic = ? Potential Energy = PE = mgh PE is in Joules

105. • • • • • • • • • • Activity! Information Height 2.75 m / 9ft Paperclip 5 cm? Hook 5 cm? Elastic not stretched 80 cm / 2’8” ish. Mass of egg and 2 washers = 32grams 32g x .001 =.032kg Stretched Elastic = ? Potential Energy = PE = mgh PE is in Joules – Mass of the Object (Kilograms) – g = gravitational acceleration of the earth (9.8 m/sec2) – Height above surface (Meters)

106. • • • • • • • • • • Activity! Information Height 2.75 m / 9ft Paperclip 5 cm? Hook 5 cm? Elastic not stretched 80 cm / 2’8” ish. Mass of egg and 2 washers = 32grams 32g x .001 =.032kg Stretched Elastic = ? Potential Energy = PE = mgh PE is in Joules – Mass of the Object (Kilograms) – g = gravitational acceleration of the earth (9.8 m/s²) – Height above surface (Meters)

107. • • • • • • • • • • Activity! Information Height 2.75 m / 9ft Paperclip 5 cm? Hook 5 cm? Elastic not stretched 80 cm / 2’8” ish. Mass of egg and 2 washers = 32grams 32g x .001 =.032kg Stretched Elastic = ? Potential Energy = PE = mgh PE is in Joules – Mass of the Object (Kilograms) – g = gravitational acceleration of the earth (9.8 m/s²) – Height above surface (Meters)

108. • Follow up questions. – What did you learn in this activity? • Please draw a quick sketch of a bungee jumping egg with a short description of something you learned next to it. – If your egg cracked your picture must show this.

109. • Activity! Bungee Jumping Egg Information – Law Conservation of Energy:

110. • Activity! Bungee Jumping Egg Information – Law Conservation of Energy: Energy cannot be created or destroyed, only converted between one form and another.

117. • Activity! Bungee Jumping Egg Information – Law Conservation of Energy: Energy cannot be created or destroyed, only converted between one form and another. • The egg moves,

118. • Activity! Bungee Jumping Egg Information – Law Conservation of Energy: Energy cannot be created or destroyed, only converted between one form and another. • The egg moves, makes a sound,

119. • Activity! Bungee Jumping Egg Information – Law Conservation of Energy: Energy cannot be created or destroyed, only converted between one form and another. • The egg moves, makes a sound, must move air molecules,

120. • Activity! Bungee Jumping Egg Information – Law Conservation of Energy: Energy cannot be created or destroyed, only converted between one form and another. • The egg moves, makes a sound, must move air molecules, cracks,

121. • Activity! Bungee Jumping Egg Information – Law Conservation of Energy: Energy cannot be created or destroyed, only converted between one form and another. • The egg moves, makes a sound, must move air molecules, cracks, the washers move across the floor,

122. • Activity! Bungee Jumping Egg Information – Law Conservation of Energy: Energy cannot be created or destroyed, only converted between one form and another. • The egg moves, makes a sound, must move air molecules, cracks, the washers move across the floor, the string and elastic heat up,

123. • Activity! Bungee Jumping Egg Information – Law Conservation of Energy: Energy cannot be created or destroyed, only converted between one form and another. • The egg moves, makes a sound, must move air molecules, cracks, the washers move across the floor, the string and elastic heat up, stretch,

124. • Activity! Bungee Jumping Egg Information – Law Conservation of Energy: Energy cannot be created or destroyed, only converted between one form and another. • The egg moves, makes a sound, must move air molecules, cracks, the washers move across the floor, the string and elastic heat up, stretch, others?

125. • Activity! Bungee Jumping Egg Information

126. • Activity! Bungee Jumping Egg Information – During a bungee jump, the stored potential energy of the egg (PE = mgh) is converted into kinetic energy during the fall (KE = ½ MV²).

127. • Activity! Bungee Jumping Egg Information – During a bungee jump, the stored potential energy of the egg (PE = mgh) is converted into kinetic energy during the fall (KE = ½ MV²). • The kinetic energy is converted back to potential energy as the bungee cord stretches.

128. • Activity! Bungee Jumping Egg Information – The Potential Energy of the Egg • Potential Energy = PE = mgh • PE is in Joules – Mass of the Object (Kilograms) – g = gravitational acceleration of the earth (9.8 m/sec2) – Height above surface (Meters)

133. • Activity! Bungee Jumping Egg Information – The Potential Energy of the Egg • Potential Energy = PE = mgh • PE is in Joules – – – – Mass of the Object (Kilograms) g = gravitational acceleration of the earth (9.8 m/s²) ) Height above surface (Meters)

134. • Activity! Bungee Jumping Egg Information – The Potential Energy of the Egg • Potential Energy = PE = mgh • PE is in Joules – Mass of the Object (Kilograms) – g = gravitational acceleration of the earth (9.8 m/s²) – Height above surface (Meters)

135. • Activity! Bungee Jumping Egg Information – The Potential Energy of the Egg • Potential Energy = PE = mgh – (m)ass of the egg and washers + Elastic + String = .032kg – (g) = (9.8 m/s²) – (h) Height = 2.75 Meters

136. • Activity! Bungee Jumping Egg Information – The Potential Energy of the Egg • Potential Energy = PE = mgh – (m)ass of the egg and washers + Elastic + String = .032kg – (g) = (9.8 m/s²) – (h) Height = 2.75 Meters m

137. • Activity! Bungee Jumping Egg Information – The Potential Energy of the Egg • Potential Energy = PE = mgh – (m)ass of the egg and washers + Elastic + String = .032kg – (g) = (9.8 m/s²) – (h) Height = 2.75 Meters m .032 kg

138. • Activity! Bungee Jumping Egg Information – The Potential Energy of the Egg • Potential Energy = PE = mgh – (m)ass of the egg and washers + Elastic + String = .032kg – (g) = (9.8 m/s²) – (h) Height = 2.75 Meters m g .032 kg

139. • Activity! Bungee Jumping Egg Information – The Potential Energy of the Egg • Potential Energy = PE = mgh – (m)ass of the egg and washers + Elastic + String = .032kg – (g) = (9.8 m/s²) – (h) Height = 2.75 Meters m g .032 kg 9.8 m/s²

140. • Activity! Bungee Jumping Egg Information – The Potential Energy of the Egg • Potential Energy = PE = mgh – (m)ass of the egg and washers + Elastic + String = .032kg – (g) = (9.8 m/s²) – (h) Height = 2.75 Meters m g h .032 kg 9.8 m/s²

141. • Activity! Bungee Jumping Egg Information – The Potential Energy of the Egg • Potential Energy = PE = mgh – (m)ass of the egg and washers + Elastic + String = .032kg – (g) = (9.8 m/s²) – (h) Height = 2.75 Meters m g h .032 kg 9.8 m/s² 2.75 M

142. • Activity! Bungee Jumping Egg Information – The Potential Energy of the Egg • Potential Energy = PE = mgh – (m)ass of the egg and washers + Elastic + String = .032kg – (g) = (9.8 m/s²) – (h) Height = 2.75 Meters m g h .032 kg 9.8 m/s² 2.75 M

143. • Activity! Bungee Jumping Egg Information – The Potential Energy of the Egg • Potential Energy = PE = mgh – (m)ass of the egg and washers + Elastic + String = .032kg – (g) = (9.8 m/s²) – (h) Height = 2.75 Meters m g h .032 kg 9.8 m/s² 2.75 M PE= .032 kg 9.8m/s² 2.75 M

144. • Activity! Bungee Jumping Egg Information – The Potential Energy of the Egg • Potential Energy = PE = mgh – (m)ass of the egg and washers + Elastic + String = .032kg – (g) = (9.8 m/s²) – (h) Height = 2.75 Meters m g h .032 kg 9.8 m/s² 2.75 M PE= .032 kg 9.8m/s² 2.75 M PE =

145. • Activity! Bungee Jumping Egg Information – The Potential Energy of the Egg • Potential Energy = PE = mgh – (m)ass of the egg and washers + Elastic + String = .032kg – (g) = (9.8 m/s²) – (h) Height = 2.75 Meters m g h .032 kg 9.8 m/s² 2.75 M PE= .032 kg 9.8m/s² 2.75 M PE = .86 Joules

146. • Activity! Bungee Jumping Egg Information – Hooke’s Law:

147. • Activity! Bungee Jumping Egg Information – Hooke’s Law: The force produced by the stretched spring is directly proportional to the distance the spring is stretched compared to its unstretched state F = -kx

148. • Video Link! (Optional) • Potential and Kinetic Energy • Be a proactive learner and record problems in your journal. – http://www.youtube.com/watch?v=BSWl_Zj-CZs

150. • Calculate the potential energy for a 2500 kg satellite orbiting at an altitude of 50,000 meters above the surface of the earth if it is traveling with a velocity of 9.8 m/s². Find PE in Joules? – Assume we are using the earth gravity constant.

151. • Calculate the potential energy for a 2500 kg satellite orbiting at an altitude of 50,000 meters above the surface of the earth if it is traveling with a velocity of 9.8 m/s². Find PE in Joules? – Assume we are using the earth gravity constant.

152. • Calculate the potential energy for a 2500 kg satellite orbiting at an altitude of 50,000 meters above the surface of the earth if it is traveling with a velocity of 9.8 m/s². Find PE in Joules? PE=mgh – Assume we are using the earth gravity constant.

153. • Calculate the potential energy for a 2500 kg satellite orbiting at an altitude of 50,000 meters above the surface of the earth if it is traveling with a velocity of 9.8 m/s². Find PE in Joules? PE=mgh – Assume we are using the earth gravity constant.

168. • Law of Gravity F = G M m / r^2 – Gravity is an attractive force between two bodies, which depends only on the mass of the two bodies (M and m) and inversely on the square of the separation between the two bodies. – (If you double the mass of the earth, its gravitational force will become twice as big; if you get 3 times further away from the earth, its gravitational force will be 3 times weaker.) If interested in some difficult mathematics visit… http://easycalculation.com/physics/classical-physics/learn-newtons-law.php

180. • Which one is the relative gravity of Jupiter? – Earth's force of gravity is measured at 1.00

183. • Question. – If the sun were to be shrunk into the size of a basketball without losing any mass, would it have more, less, or the same gravitational effects it has now?

184. • Question. Answer… – If the sun were to be shrunk into the size of a basketball without losing any mass, would it have more, less, or the same gravitational effects it has now?

187. • Question. Answer… – If the sun were to be shrunk into the size of a basketball without losing any mass, would it have more, less, or the same gravitational effects it has now? Learn more (Advanced) at… http://www2.astro.psu.edu/users/caryl/a10/lec4_2d.html

188. • In rocketry we can use gravity to speed up an object and change directions

189. • In rocketry we can use gravity to speed up an object and change directions

190. • Gravity of the earth keeps the moon from going into deep space,

191. • Gravity of the earth keeps the moon from going into deep space, gravity of the sun keeps the earth in orbit,

192. • Gravity of the earth keeps the moon from going into deep space, gravity of the sun keeps the earth in orbit, and gravity of our galaxy keeps sun from heading into deep space.

193. • The Apollo missions used the gravitational pull of the earth and moon to slingshot / gain velocity.

194. • Video Link! Gravity in a minute – http://www.youtube.com/watch?v=Jk5E-CrE1zg

195. • Black holes, space-time, Einstein, and relativity optional PowerPoint in activities folder.

201. • Kinetic energy – The energy that matter has because of its This equation shows that the kinetic energy of motion and mass. an object is proportional to the square of its Where m = a twofold increase in speed, – speed. For mass of object (kg). the kinetic energy will increase by a factor of – v = speed of object. four. – KE = Energy in Joules. Copyright © 2010 Ryan P. Murphy

202. • Kinetic energy – The energy that matter has because of its This equation shows that the kinetic energy of motion and mass. an object is proportional to the square of its Where m = a twofold increase in velocity, – speed. For mass of object (kg). the kinetic energy will increase by a factor of – v = speed of object. four. – KE = Energy in Joules. Copyright © 2010 Ryan P. Murphy

207.  Translational Energy: Motion from one location to another.

208.  Vibrational energy (sound)

210.  Rotational energy.

211. • Kinetic energy is a scalar quantity; as it does not have a direction.

212. • Kinetic energy is a scalar quantity; as it does not have a direction. – Velocity, acceleration, force, and momentum, are vectors. A quantity having direction as well as magnitude

217. • Kinetic energy is a scalar quantity; as it does not have a direction. – Velocity, acceleration, force, and momentum, are vectors. A quantity having direction as well as magnitude Magnitude is just the measurement without direction

218. • Kinetic energy is a scalar quantity; as it does not have a direction. – Velocity, acceleration, force, and momentum, are vectors. A quantity having direction as well as magnitude Scalars and Vectors. Learn more at… http://www.grc. nasa.gov/WWW /k12/airplane/vect ors.html

219. • How you can remember the difference between the two…

220. • How you can remember the difference between the two… Scales are still / Don’t have direction

221. • How you can remember the difference between the two… Scales are still / Don’t have direction Just a cool fighter pilot name, Jet Pilots travel with direction.

222. • Which are scalar quantities? – Magnitude only • Which are vector quantities? – Magnitude and direction. Magnitude is just the measurement without direction

233. • F=ma – (Which is are scalars and which are vectors?)

234. • F=ma – (Which is are scalars and which are vectors?)

235. • F=ma – (Which is are scalars and which are vectors?) Force has magnitude and direction

236. • F=ma – (Which is are scalars and which are vectors?) Force has magnitude and direction

237. • F=ma – (Which is are scalars and which are vectors?) Force has magnitude and direction Mass: Magnitude Only

238. • F=ma – (Which is are scalars and which are vectors?) Force has magnitude and direction Mass: Magnitude Only

239. • F=ma – (Which is are scalars and which are vectors?) Acceleration has magnitude and direction Force has magnitude and direction Mass: Magnitude Only

272. • • • • KE = 0.5 times .142 kg times (45) ² Joules KE = 0.5 times .142 kg times 2,025 Joules KE = .071 kg times 2,025 Joules KE = 143.775 Joules Kinetic Energy, Learn more at… http://www.physicsclassroom .com/class/energy/u5l1c.cfm Copyright © 2010 Ryan P. Murphy

276. • A ski jumper moving down the hill had a Potential Energy of 10,500 Joules, and a Kinetic Energy of 6,500 Joules. – What is her Mechanical Energy?

279. • A ski jumper moving down the hill had a Potential Energy of 10,500 Joules, and a Kinetic Energy of 6,500 Joules. – What is her Mechanical Energy? ME = PE + KE

280. • A ski jumper moving down the hill had a Potential Energy of 10,500 Joules, and a Kinetic Energy of 6,500 Joules. – What is her Mechanical Energy? ME = PE + KE ME = 10,500 J + 6,500 J

281. • A ski jumper moving down the hill had a Potential Energy of 10,500 Joules, and a Kinetic Energy of 6,500 Joules. – What is her Mechanical Energy? ME = PE + KE ME = 10,500 J + 6,500 J ME =

282. • A ski jumper moving down the hill had a Potential Energy of 10,500 Joules, and a Kinetic Energy of 6,500 Joules. – What is her Mechanical Energy? ME = PE + KE ME = 10,500 J + 6,500 J ME = 17,000 Joules.

283. • Please calculate the potential energy of a pole-vaulter at the top of their vault. The run into the vault was 8.3 m/s and they weighed 77 kilograms. – (Assume all energy in the vault was transformed into potential energy to make this question easier.)

284. • Please calculate the potential energy of a pole-vaulter at the top of their vault. The run into the vault was 8.3 m/s and they weighed 77 kilograms. KE= ½ m * V² – (Assume all energy in the vault was transformed into potential energy to make this question easier.)

285. • Please calculate the potential energy of a pole-vaulter at the top of their vault. The run into the vault was 8.3 m/s and they weighed 77 kilograms. KE= ½ m * V² (Assume all energy in the vault was transformed into potential energy to make this question easier.)

286. • Please calculate the potential energy of a pole-vaulter at the top of their vault. The run into the vault was 8.3 m/s and they weighed 77 kilograms. KE= ½ m * V2 – (Assume all energy in the vault was transformed into potential energy to make this question easier.) “The homework isn’t color coded.”

287. • Please calculate the potential energy of a pole-vaulter at the top of their vault. The run into the vault was 8.3 m/s and they weighed 77 kilograms. KE= ½ m * V² – (Assume all energy in the vault was transformed into potential energy to make this question easier.)

288. • Please calculate the potential energy of a pole-vaulter at the top of their vault. The run into the vault was 8.3 m/s and they weighed 77 kilograms. KE= ½ m * V² – (Assume all energy in the vault was transformed into potential energy to make this question easier.) KE KE KE KE = ½ m * V² = = =

289. • Please calculate the potential energy of a pole-vaulter at the top of their vault. The run into the vault was 8.3 m/s and they weighed 77 kilograms. KE= ½ m * V² – (Assume all energy in the vault was transformed into potential energy to make this question easier.) KE KE KE KE = ½ m * V² = .5* 77 kg * 8.3 m/s = =

290. • Please calculate the potential energy of a pole-vaulter at the top of their vault. The run into the vault was 8.3 m/s and they weighed 77 kilograms. KE= ½ m * V² – (Assume all energy in the vault was transformed into potential energy to make this question easier.) KE KE KE KE = ½ m * V² = .5* 77 kg * 8.3 m/s = .5* 77 kg * 68.89 m/s =

291. • Please calculate the potential energy of a pole-vaulter at the top of their vault. The run into the vault was 8.3 m/s and they weighed 77 kilograms. KE= ½ m * V² – (Assume all energy in the vault was transformed into potential energy to make this question easier.) KE KE KE KE = = = = ½ m * V² .5* 77 kg * 8.3 m/s .5* 77 kg * 68.89 m/s 2652.2 Joules

293. • Please calculate the potential energy of a pole-vaulter at the top of their vault. Their height was 3 meters and they weighed 77 kilograms. PE= mgh – (Assume all energy in the vault was transformed into potential energy to make this question easier.)

298. • Please calculate the potential energy of a pole-vaulter at the top of their vault. Their height was 3 meters and they weighed 77 kilograms. PE= mgh (9.8 m/s²) – (Assume all energy in the vault was transformed into potential energy to make this question easier.)

299. • Please calculate the potential energy of a pole-vaulter at the top of their vault. Their height was 3 meters and they weighed 77 kilograms. PE= mgh (9.8 m/s²) – (Assume all energy in the vault was transformed into potential energy to make this question easier.)

300. • Please calculate the potential energy of a pole-vaulter at the top of their vault. Their height was 3 meters and they weighed 77 kilograms. PE= mgh (9.8 m/s²) – (Assume all energy in the vault was transformed into potential energy to make this question easier.) “Organize your work please.”

301. • Please calculate the potential energy of a pole-vaulter at the top of their vault. Their height was 3 meters and they weighed 77 kilograms. PE= mgh (9.8 m/s²) – (Assume all energy in the vault was transformed into potential energy to make this question easier.) PE= mgh

302. • Please calculate the potential energy of a pole-vaulter at the top of their vault. Their height was 3 meters and they weighed 77 kilograms. PE= mgh (9.8 m/s²) – (Assume all energy in the vault was transformed into potential energy to make this question easier.) PE= mgh PE = 77 kg* 9.8 m/s² * 3 m

303. • Please calculate the potential energy of a pole-vaulter at the top of their vault. Their height was 3 meters and they weighed 77 kilograms. PE= mgh (9.8 m/s²) – (Assume all energy in the vault was transformed into potential energy to make this question easier.) PE= mgh PE = 77 kg* 9.8 m/s² * 3 m PE = 2263.8 Joules

304. • Please calculate the potential energy of a pole-vaulter at the top of their vault. Their height was 3 meters and they weighed 77 kilograms. PE= mgh (9.8 m/s²) – (Assume all energy in the vault was transformed into potential energy to make this question easier.) PE= mgh PE = 77 kg* 9.8 m/s² * 3 m PE = 2263.8 Joules

305. • Please calculate the potential energy of a pole-vaulter at the top of their vault. Their height was 3 meters and they weighed 77 kilograms. PE= mgh (9.8 m/s²) – (Assume all energy in the vault was transformed into potential energy to make this question easier.) PE= mgh PE = 77 kg* 9.8 m/s² * 3 m PE = 2263.8 Joules KE = 2652.2 Joules

306. • Please calculate the potential energy of a pole-vaulter at the top of their vault. Their height was 3 meters and they weighed 77 kilograms. PE= mgh (9.8 m/s²) – (Assume all energy in the vault was transformed into potential energy to make this question easier.) PE= mgh PE = 77 kg* 9.8 m/s² * 3 m PE = 2263.8 Joules KE = 2652.2 Joules -388.4 Joules for heat, sound, and other losses.

307. • Please calculate the potential energy of a pole-vaulter at the top of their vault. Their height was 3 meters and they weighed 77 kilograms. PE= mgh (9.8 m/s²) – (Assume all energy in the vault was transformed into potential energy to make this question easier.) PE= mgh PE = 77 kg* 9.8 m/s² * 3 m PE = 2263.8 Joules KE = 2652.2 Joules -388.4 Joules for heat, sound, and other losses.

313.  Centrifugal Force: (Does not exist) The Force that makes us feel that a force is acting outward on a body moving around a center, arising from the body's inertia If I were to throw up right now which way would it go? Copyright © 2010 Ryan P. Murphy

320. Important Note: Centrifugal force does not actually exist.

321. Important Note: Centrifugal force does not actually exist. We are in a non-inertial coordinate system. Nevertheless, it appears quite real to the object being rotated. Centrifugal force is like Newton's "Every action has an equal an opposite reaction.” When you step on the gas in your car you hit the seat behind you as if you are going backwards but you are really going forwards. As soon as you stop pulling on the merry go round (applying an inward, not outward force) you will fly off in a straight line. No more force inward, no more going in a circle.

322. Important Note: Centrifugal force does not actually exist. We are in a non-inertial coordinate system. Nevertheless, it appears quite real to the object being rotated. Centrifugal force is like Newton's "Every action has an equal an opposite reaction.” When you step on the gas in your car you hit the seat behind you as if you are going backwards but you are really going forwards. As soon as you stop pulling on the merry go round (applying an inward, not outward force) you will fly off in a straight line. No more force inward, no more going in a circle. Learn more at… http://knowledgedrift.wordpress.com/strange-oddities-ofhistory/the-myth-of-centrifugal-force/

323. • Video! “Centrifugal Force” misplayed with some kids who didn’t take this class. – http://www.youtube.com/watch?v=XWCBk9Vl-rc Note: All yellow print doesn’t actually exist.

326.  Why didn’t the water fall out of the pail as I was spinning it around?

333. “I feel centrifugal force.”

340. • The World of the Hammer Throw. Centripetal Force – http://www.youtube.com/watch?v=tB00eDfTNhs

341. • The World of the Hammer Throw. Centripetal Force – http://www.youtube.com/watch?v=tB00eDfTNhs As soon as the thrower stopped pulling on the hammer (applying an inward, not outward force) it flew off in a straight line. No more force inward, no more going in a circle. Just a straight line out. Centrifugal force does not exist. Centripetal Force: Learn more at… http://regentsprep.org/regents/physics/phys06/b centrif/default.htm

342. • Activity (Optional) Funky foam tube roller coaster. – Use ½ inch foam pipe insulation cut in half, duct tape to connect the tubes and anchor, cup to catch at end, and marbles.

343. • Create a one page visual of a roller coaster with drawings. – Name your coaster. – Create a not to scale visual that will be achievable with the materials provided by teacher. – Class will vote to choose a model and build the coaster. – Calculate the PE and KE. – Find the mass of the marble. – Measure the height of the coaster. – Calculate the velocity. • Distance / meters divided by seconds and direction

344. • Create a one page visual of a roller coaster with drawings. – Name your coaster. – Create a not to scale visual that will be achievable with the materials provided by teacher. – Class will vote to choose a model and then build the coaster. – Calculate the PE and KE. – Find the mass of the marble. – Measure the height of the coaster. – Calculate the velocity. • Distance / meters divided by seconds and direction

345. • Academic Link! (Optional) PE and KE – http://www.youtube.com/watch?v=BSWl_Zj-CZs

346. • F=MA, PE, KE and more ramp activity. – Available Sheet

349. • Please create this spreadsheet in your journal. • Truck (D Battery) Car (AA Batter) – Cup (Parked Car) Ramp Height Parked car One Washer Parked Car Parked Car Two Washer Three Washers Lowest AA –Car_________ (Distance of Parked Car) D – Truck________ Middle AA –Car___________ AA –Car_________ (Distance of Parked Car) D – Truck__________ D – Truck________ Highest AA –Car___________ AA –Car_________ (Distance of Parked Car) D – Truck__________ D – Truck________ Make Prediction after data collection, AA –Car_________ D – Truck________ Copyright © 2010 Ryan P. Murphy

350. Set-up of the activity. The height can change by placing the rectangular block on its various sides. Ramp start line Height D 5cm gap Plastic Cup Washers 1-3 AA Meter Stick to measure distance cup “parked car” travels after hit. Copyright © 2010 Ryan P. Murphy

351. • Conduct trials with small car (AA Battery) with one and three washers and the three different heights, measuring the distance the parked car traveled after hit in cm. • Repeat with Truck / D Battery. – Do not do medium height as we will predict later. Copyright © 2010 Ryan P. Murphy

354. • Based on your data, make a prediction for the distance the parked car should travel for both the small car (AA) and truck (D) on your spreadsheets for medium height with two washers. Copyright © 2010 Ryan P. Murphy

355. • Based on your data, make a prediction for the distance the parked car should travel for both the small car (AA) and truck (D) on your spreadsheets for medium height with two washers. – Run some trials afterward to see if your prediction is correct. Copyright © 2010 Ryan P. Murphy

361. Increase in Friction / Mass to move.

368. Increase in Friction / Mass to move.

371. • Questions to answer in journal (graded) – Which Battery caused the parked car to move further? Use your data – Mass = Weight of battery – Acceleration - – Explain your answer using F=MA. Copyright © 2010 Ryan P. Murphy

372. • How did the height of the ramp affect the movement of the parked car? – Use potential energy and kinetic energy in your response. – Measure the height of the ramp, mass of the batteries, and determine the Potential Energy. PE=mgh Copyright © 2010 Ryan P. Murphy

375. – Which Battery caused the parked car to move further? • The larger D battery because it has more mass and thus has more force.- – Explain your answer above using F=ma. • F was increased because the D battery has more Mass. Copyright © 2010 Ryan P. Murphy

376. – Which Battery caused the parked car to move further? • The larger D battery because it has more mass and thus has more force. – Explain your answer above using F=ma. • F was increased because the D battery has more mass. Copyright © 2010 Ryan P. Murphy

377. – Which Battery caused the parked car to move further? • The larger D battery because it has more mass and thus has more force. – Explain your answer above using F=ma. • F was increased because the D battery has more Mass. Copyright © 2010 Ryan P. Murphy

378. – Which Battery caused the parked car to move further? • The larger D battery because it has more mass and thus has more force. – Explain your answer above using F=ma. • Force increased because the D battery has more mass. Copyright © 2010 Ryan P. Murphy

381. • How did the height of the ramp affect the movement of the parked car? – Increasing the height of the ramp increased the batteries potential energy. This increase of potential energy created an increase in kinetic energy / (Acceleration) which caused the parked car to move further (force). Copyright © 2010 Ryan P. Murphy

383. • How did the resistance to force (washers) affect the movement of the parked car? – The more mass added to the parked car (washers) decreased the distance it traveled after being struck. Copyright © 2010 Ryan P. Murphy

385. • What should you be aware of as you are only a few years from driving? F=ma – You should be aware that Newton’s Laws of motion are real and they can be deadly so be safe. Copyright © 2010 Ryan P. Murphy

388. • Video! Crash Test without a seatbelt (9 sec) – http://www.youtube.com/watch?v=KBzyiKmhhY

389. • Find the Mechanical Energy of the large D battery hitting the parked car from the highest position. • PE = mgh KE = ½ mass * velocity2 – D Battery mass = 148 g (.148kg) – Height = 6 cm (.06m) – Gravity = 9.8 m/sec – Velocity 3 m/sec

390. • Find the Mechanical Energy of the large D battery hitting the parked car from the highest position. • PE = mgh KE = ½ mass * velocity² – D Battery mass = 148 g (.148kg) – Height = 6 cm (.06m) – Gravity = 9.8 m/sec – Velocity 3 m/sec

391. • Find the Mechanical Energy of the large D battery hitting the parked car from the highest position. • PE = mgh KE = ½ mass * velocity² – D Battery mass = 148 g (.148kg) – Height = 6 cm (.06m) – Gravity = 9.8 m/s² – Velocity 3 m/s West

392. • Find the Mechanical Energy of the large D battery hitting the parked car from the highest position. • PE = mgh KE = ½ mass * velocity² – D Battery mass = 148 g (.148kg) – Height = 6 cm (.06m) Organize your work! – Gravity = 9.8 m/s² PE= mgh PE = ____ * ___ * ____ – Velocity 3 m/s West PE = Joules

393. • Find the Mechanical Energy of the large D battery hitting the parked car from the highest position. • PE = mgh KE = ½ mass * velocity² – D Battery mass = 148 g (.148kg) – Height = 6 cm (.06m) – Gravity = 9.8 m/s² – Velocity 3 m/s West

394. • Find the Mechanical Energy of the large D battery hitting the parked car from the highest position. • PE = mgh KE = ½ mass * velocity² – D Battery mass = 148 g (.148kg) – Height = 6 cm (.06m) – Gravity = 9.8 m/s² – Velocity 3 m/s West – Answer in Joules

399. • Find the Mechanical Energy of the large D battery hitting the parked car from the highest position. • PE = mgh KE = ½ mass * velocity² – D Battery mass = 148 g (.148kg) – Height = 6 cm (.06m) – Gravity = 9.8 m/s² – Velocity 3 m/s West – Answer in Joules Organize your work! PE= mgh PE = ____ * ___ * ____ PE = Joules

400. • Find the Mechanical Energy of the large D battery hitting the parked car from the highest position. • PE = mgh KE = ½ mass * velocity² – D Battery mass = 148 g (.148kg) – Height = 6 cm (.06m) PE=mgh – Gravity = 9.8 m/s² – Velocity 3 m/s West – Answer in Joules

401. • Find the Mechanical Energy of the large D battery hitting the parked car from the highest position. • PE = mgh KE = ½ mass * velocity² – D Battery mass = 148 g (.148kg) – Height = 6 cm (.06m) PE=mgh – Gravity = 9.8 m/s² – Velocity 3 m/s West – Answer in Joules PE= .148kg * 9.8 m/s² * .06m

402. • Find the Mechanical Energy of the large D battery hitting the parked car from the highest position. • PE = mgh KE = ½ mass * velocity² – D Battery mass = 148 g (.148kg) – Height = 6 cm (.06m) PE=mgh – Gravity = 9.8 m/s² – Velocity 3 m/s West – Answer in Joules PE= .148kg * 9.8 m/s² * .06m

403. • Find the Mechanical Energy of the large D battery hitting the parked car from the highest position. • PE = mgh KE = ½ mass * velocity² – D Battery mass = 148 g (.148kg) – Height = 6 cm (.06m) PE=mgh – Gravity = 9.8 m/s² – Velocity 3 m/s West – Answer in Joules PE= .148kg * 9.8 m/s² * .06m PE = .087 Joules

404. • Find the Mechanical Energy of the large D battery hitting the parked car from the highest position. • PE = mgh KE = ½ mass * velocity² • PE = .087 Joules – D Battery mass = 148 g (.148kg) – Height = 6 cm (.06m) – Gravity = 9.8 m/s² – Velocity 3 m/s West – Answer in Joules

405. • Find the Mechanical Energy of the large D battery hitting the parked car from the highest position. • PE = mgh KE = ½ mass * velocity² • PE = .087 Joules – D Battery mass = 148 g (.148kg) – Height = 6 cm (.06m) – Gravity = 9.8 m/s² – Velocity 3 m/s West – Answer in Joules KE=1/2 m * velocity²

406. • Find the Mechanical Energy of the large D battery hitting the parked car from the highest position. • PE = mgh KE = ½ mass * velocity² • PE = .087 Joules – D Battery mass = 148 g (.148kg) – Height = 6 cm (.06m) – Gravity = 9.8 m/s² – Velocity 3 m/s West – Answer in Joules KE=1/2 m * velocity²

407. • Find the Mechanical Energy of the large D battery hitting the parked car from the highest position. • PE = mgh KE = ½ mass * velocity² • PE = .087 Joules – D Battery mass = 148 g (.148kg) – Height = 6 cm (.06m) – Gravity = 9.8 m/s² – Velocity 3 m/s West – Answer in Joules KE=1/2 m * velocity² KE=.5 * .148 * 3 m/s

408. • Find the Mechanical Energy of the large D battery hitting the parked car from the highest position. • PE = mgh KE = ½ mass * velocity² • PE = .087 Joules – D Battery mass = 148 g (.148kg) – Height = 6 cm (.06m) – Gravity = 9.8 m/s² – Velocity 3 m/s West – Answer in Joules KE=1/2 m * velocity² KE=.5 * .148 * 3 m/s KE=.5 * .148 * 9 m/s

409. • Find the Mechanical Energy of the large D battery hitting the parked car from the highest position. • PE = mgh KE = ½ mass * velocity² • PE = .087 Joules – D Battery mass = 148 g (.148kg) – Height = 6 cm (.06m) – Gravity = 9.8 m/s² – Velocity 3 m/s West – Answer in Joules KE=1/2 m * velocity² KE=.5 * .148 * 3 m/s KE=.5 * .148 * 9 m/s KE = .666 Joules

410. • Find the Mechanical Energy of the large D battery hitting the parked car from the highest position. • PE = mgh KE = ½ mass * velocity² • PE = .087 Joules KE = .666 Joules – D Battery mass = 148 g (.148kg) – Height = 6 cm (.06m) – Gravity = 9.8 m/s² – Velocity 3 m/s West – Answer in Joules KE=1/2 m * velocity² KE=.5 * .148 * 3 m/s KE=.5 * .148 * 9 m/s KE = .666 Joules

411. • Find the Mechanical Energy of the large D battery hitting the parked car from the highest position. • PE = mgh KE = ½ mass * velocity² • PE = .087 Joules KE = .666 Joules – D Battery mass = 148 g (.148kg) – Height = 6 cm (.06m) – Gravity = 9.8 m/s² – Velocity 3 m/s West – Answer in Joules KE=1/2 m * velocity² KE=.5 * .148 * 3 m/s KE=.5 * .148 * 9 m/s KE = .666 Joules

412. • Find the Mechanical Energy of the large D battery hitting the parked car from the highest position. • PE = mgh KE = ½ mass * velocity² • PE = .087 Joules KE = .666 Joules – D Battery mass = 148 g (.148kg) – Height = 6 cm (.06m) – Gravity = 9.8 m/s² – Velocity 3 m/s West – Answer in Joules KE=1/2 m * velocity² KE=.5 * .148 * 3 m/s KE=.5 * .148 * 9 m/s KE = .666 Joules Mechanical Energy (ME) =

413. • Find the Mechanical Energy of the large D battery hitting the parked car from the highest position. • PE = mgh KE = ½ mass * velocity² • PE = .087 Joules KE = .666 Joules – D Battery mass = 148 g (.148kg) – Height = 6 cm (.06m) – Gravity = 9.8 m/s² – Velocity 3 m/s West – Answer in Joules KE=1/2 m * velocity² KE=.5 * .148 * 3 m/s KE=.5 * .148 * 9 m/s KE = .666 Joules Mechanical Energy (ME) = .753 Joules

414. • Question on homework: Describe three ways potential energy of position as well as potential chemical energy are combined with kinetic energy to generate kinetic electrical energy. Copyright © 2010 Ryan P. Murphy

415. • Question on homework: Describe three ways potential energy of position as well as potential chemical energy are combined with kinetic energy to generate kinetic electrical energy. Copyright © 2010 Ryan P. Murphy

422. • In Dinowrig, Wales. Water is pumped from the lower lake to the upper lake when electricity is low in demand.

423. • During times high electrical demand, the stored potential energy flows downhill to generate electricity (Kinetic).

432. • Steam / Coal and wood burning electric plant

433. • Nuclear energy – Nuclear reactions generate kinetic electrical energy using water, steam, and a turbine.

434. • When you lift an object, chemical energy (a form of potential energy) stored in the chemicals obtained from your digested food is converted into the mechanical energy (kinetic) used to move your arm and the object upward and into heat given off by your body. Copyright © 2010 Ryan P. Murphy

435. • When you lift an object, chemical energy (a form of potential energy) stored in the chemicals obtained from your digested food is converted into the mechanical energy (kinetic). Which is then used to move your body. Heat is produced Copyright © 2010 Ryan P. Murphy

438. • When you lift an object, chemical energy (a form of potential energy) stored in the chemicals obtained from your digested food is converted into the mechanical energy (kinetic). Which is then used to move your body. Heat is released. Copyright © 2010 Ryan P. Murphy

439. • Forces in Motion, Speed, Velocity, Acceleration and more available sheet.

449. • How you can remember the difference between the two…

450. • How you can remember the difference between the two… Scales are still / Don’t have direction

451. • How you can remember the difference between the two… Scales are still / Don’t have direction Just a cool fighter pilot name, Jet Pilots travel with direction.

463. • Which are scalar quantities? – Magnitude only • Which are vector quantities? – Magnitude and direction.

474. • Which are scalar quantities? Magnitude is just the – Magnitude only measurement • Which are vector quantities? without – Magnitude and direction. direction

475. • Video Link! (Optional) Scalers and Vectors. – http://www.youtube.com/watch?v=EUrMI0DIh40

476. • More Units Available at… Earth Science: The Soil Science and Glaciers Unit, The Geology Topics Unit, The Astronomy Topics Unit, The Weather and Climate Unit, and The River and Water Quality Unit, and The Water Molecule Unit. Physical Science: The Laws of Motion and Machines Unit, The Atoms and Periodic Table Unit, Matter, Energy, and the Environment Unit, and The Science Skills Unit. Life Science: The Infectious Diseases Unit, Cellular Biology Unit, The DNA and Genetics Unit, The Botany Unit, The Taxonomy and Classification Unit, Ecology: Feeding Levels Unit, Ecology: Interactions Unit, Ecology: Abiotic Factors, The Evolution and Natural Selection Unit and The Human Body Systems and Health Topics Unit. Copyright © 2010 Ryan P. Murphy

477. • http://sciencepowerpoint.com/

Potential and Kinetic Energy PowerPoint

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