2. Focus during the entire Power Point activity.
Solidify your studying skills during this
class period.
Perform your work in your science journal so
you have created a study guide for the test.
Call me over if you are having difficulty
getting started.
If your answer is confirmed as correct,
become a student/teacher and help someone
in class who does not understand the
method used to solve the problem.
4. The Batallac, the 1500 kg car used by
Batfink and Karate to fight crime, is
stopped at a height of 35 meters at the top
of a damaged bridge. You may assume
there is no friction. How much energy
has been transferred? What container is
this energy stored in? Remember that
Batfink is 50 kg and Karate is 150 kg.
5. SOLUTION:
How much energy has been transferred into
which container?
K
U
m = 1700 kg
g = 9.8 m/s2
Δy = 35 m
Ug
Ug = 583,100 J
F = -kΔl
P = W/t
6. What is the velocity of
the Batallac just before
it hits the water?
8. Our heroes, Batfink and Karate, are
stuck in quick drying cement. Big
Ears Ernie has vertically displaced a
one metric ton (1,000 kg) wrecking
ball 4 meters and is attempting to
smash them. How much energy is
being stored in the g-field?
15. The Batallac has come to a
stop between the two bridge
decks 81.87 meters above the
icy river. What is the total
energy in the gravitational
field?
21. Fortunately, Batfink is able to
free himself from the Batallac
and stop the car from falling
into the river. How much
force was needed to bring the
car to a complete stop?
27. Fortunately for Batfink, there
was a spring on the floor
under the trap door. If the
force needed to compress
this spring 3 meters is 2100
N, what is the spring
constant?