Choosing the Right CBSE School A Comprehensive Guide for Parents
Sailing physics pow pt 2012 edited
1. Sailing
Conceptual Physics
annie cloutier 2012 copyright
Wind Power is the Force
Nweton’s Second Law F = m a
Newton’s Third Law
Action ~ Reaction
Bernoulli’s Principle
2. http://science.kqed.org/quest/video/the-physics-of-sailing/
Position Is defined in relation to a
reference point
Velocity is described by
Velocity direction and speed of an
object
∆ delta means change
Change in velocity is due
to changes in speed,
direction or both
4. Understanding Motion
Speed How fast an object is moving
calculate by dividing the distance
covered by time
Instantaneous speed The speed at any instant
Average speed is the total
Average speed distance covered divided by
the time
Total distance Is the average speed times
the travel time
5. NEWTON’S THIRD LAW Action - Reaction
For every action there is an equal and opposite reaction
When an object is subjected to multiple forces at
once, the result is the cumulative effect of all the
forces
When forces on an object are balanced, the object
will change its velocity
When forces are not balanced, no acceleration occurs
When a body A exerts a force on a body B, B exerts
an equal and opposite force on A
7. Velocity and Acceleration
Velocity Acceleration
Is speed in a given Is the rate at which the
direction velocity is changing
Speed is a description Acceleration can apply
of how fast an object is to decreases as well as
moving increases in speed
Velocity is how fast Deceleration is the
and in what direction it decreasing of speed
moves (slam on your brakes)
8. Conservation of Energy
An unbalances force on an object produces a
change in momentum
States that the energy can not be created or
destroyed
Energy can be transferred from one form into
another, but the total amount of energy never
changes.
13. Activity :
Bernoulli’s Principle
5 cm wide x 28 cm long
strip of paper
Blow across the top of
the paper strip
Notice the position of
the end of the paper.