# Shared Flashcard Set

## Details

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

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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