Making Things Go : Making Things Go Ms. Shinkle
October 5-6, 2007
Acceleration : Acceleration To accelerate an object, a force must be applied.
The force on the object must come from outside the object.
Acceleration : Acceleration If more force is applied, an object will be accelerated ____
If an object is more massive it will be accelerated ____ more less
Accelerated Motion Graph : Accelerated Motion Graph
Positive & Negative Acceleration : Positive & Negative Acceleration
Effect of Mass on Acceleration : Effect of Mass on Acceleration F = ma
Acceleration : Acceleration Difference in velocity over time Acceleration = final velocity – initial velocity
time
a = (vf – vi)/ t
Momentum : Momentum Property of a moving object due to its mass and velocity
Momentum has a direction
Momentum is ZERO if object is not moving Momentum = mass x velocity
p = mv
How Much Momentum? : How Much Momentum? A slow moving elephant
Although it has a small velocity, it has a lot of mass Momentum = mass x velocity
p = mv A bullet
Although it has a small mass it has a very large velocity