8.1 Collisions Review

Front

True or False? Speed or mass increases before a collision lead to lower peak forces between objects during a collision.

Back

False

Front

When the mass of an object is doubled, the kinetic energy of that object: triples, doubles, remains the same, or quadruples?

Back

Doubles

Front

A(n) _______ surface will produce more friction: oily, rough, slippery, or smooth?

Back

Rough

Front

True or False? Air Resistance is a force that can slow down the speed of an object.

Back

True

Front

True or False? All solid objects bend during a collision.

Back

True

Front

What is the formula for calculating kinetic energy?

Back

Kinetic Energy = 1/2 * mass * velocity^2

Front

What happens to the momentum of two colliding objects?

Back

Momentum is conserved in a closed system.

Front

Define friction.

Back

Friction is the force that opposes the motion of an object.

Front

What is the effect of a rough surface on friction?

Back

A rough surface increases friction.

Front

True or False? A heavier object will always fall faster than a lighter object in a vacuum.

Back

False, they fall at the same rate.