06a - Momentum and Collisions

Front

The momentum of an object depends upon the object's ___________ & ___________.

Back

mass and velocity

Front

Which has more momentum: a car stopped at a red light or a bike moving at 15 mph?

Back

bike

Front

The law of conservation of momentum states that, _____________.

Back

p before is the same as p after

Front

If a net force is acting on an object, _____________.

Back

its velocity must be changing

Front

The Law of Conservation of Momentum states that the amount of momentum in a system is ___________________ before and after a collision.

Back

the same

Front

Define momentum.

Back

Momentum is the product of an object's mass and its velocity.

Front

What is the formula for calculating momentum?

Back

p = mv (where p is momentum, m is mass, and v is velocity)

Front

What happens to momentum in a closed system during a collision?

Back

Momentum is conserved; the total momentum before the collision equals the total momentum after.

Front

What is an elastic collision?

Back

An elastic collision is one in which both momentum and kinetic energy are conserved.

Front

What is an inelastic collision?

Back

An inelastic collision is one in which momentum is conserved, but kinetic energy is not.