Chapter 4 Review

Front

What is momentum?

Back

Momentum is defined as 'Mass in Motion'. It is the product of an object's mass and its velocity.

Front

How do you calculate momentum?

Back

The equation to calculate momentum is p = mv, where p is momentum, m is mass, and v is velocity.

Front

What is the unit of momentum?

Back

The unit of momentum is kg·m/s (kilogram meter per second).

Front

If a cart has a mass of 0.250 kg and is moving at 0.400 m/s, what is its momentum?

Back

0.1 kg·m/s.

Front

Calculate the momentum of a 55-kg running back moving westward at 10 m/s.

Back

550 kg·m/s, west.

Front

What type of collision is characterized by the conservation of momentum but not kinetic energy?

Back

Inelastic collision.

Front

What is an elastic collision?

Back

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

Front

What happens to momentum in a closed system?

Back

In a closed system, the total momentum before and after an event (like a collision) remains constant.

Front

What is the relationship between mass and velocity in determining momentum?

Back

Momentum increases with either an increase in mass or an increase in velocity.

Front

If two objects collide and stick together, what type of collision is this?

Back

This is an example of an inelastic collision.