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EXAM STUDY TIME: Momentum!
This is the almost last set!
8
Physics
9th Grade
07/25/2009

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Cards

Term
What do we mean by momentum?
Definition
Inertia in motion.
Term
What two variables affect the momentum an object has?
Definition
Mass and velocity.
Term
What produces the acceleration that can cause a change in momentum?
Definition
Force.
Term
Force exerted for a particular time interval is called _________
Definition
Impulse.
Term
Impulse causes a change in _________.
Definition
Momentum.
Term
How do you increase the momentum of an object?
Definition
Apply the greatest force possible for the largest amount of time possible.
Term
If you were in a car that was out of control, what is the best way to decrease momentum?
Definition
Hit something soft, because it increases the time the force is acting.
Term
Which car crash is worse, one where you hit the wall and bounce off or one where you hit the wall and stop?
Definition
A car crash where you hit the wall and bounce off is worse because it takes a much greater impulse to cause you to go backwards.
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