3.3 Mastery Check

Front

What is momentum?

Back

Momentum is the combination of how heavy something is (its mass) and how fast it is moving (its velocity). It is calculated as momentum = mass × velocity.

Front

Which has more momentum: A motorcycle traveling at 60mph or a semi traveling at 60 mph?

Back

A semi traveling at 60 mph has more momentum because it has a greater mass than a motorcycle.

Front

What is a change in momentum called?

Back

A change in momentum is called impulse.

Front

In order to decrease the impulse, what should be changed?

Back

To decrease the impulse, you can change the force, the time, or both.

Front

Items with greater momentum are: easier to stop or harder to stop?

Back

Items with greater momentum are harder to stop.

Front

What is the formula for calculating momentum?

Back

The formula for momentum is p = mv, where p is momentum, m is mass, and v is velocity.

Front

If an object is at rest, what is its momentum?

Back

If an object is at rest, its momentum is zero because its velocity is zero.

Front

What happens to momentum when two objects collide?

Back

Momentum is conserved in a collision, meaning the total momentum before the collision equals the total momentum after the collision.

Front

What is impulse?

Back

Impulse is the change in momentum of an object when a force is applied over a period of time.

Front

How can you increase the momentum of an object?

Back

You can increase the momentum of an object by increasing its mass, increasing its velocity, or both.