Momentum and Impulse

Front

What does the law of conservation of momentum state?

Back

The law of conservation of momentum states that the total momentum of a closed system remains constant if no external forces act on it.

Front

How is momentum calculated?

Back

Momentum (p) is calculated using the formula p = mv, where m is mass and v is velocity.

Front

What are the units of momentum?

Back

The units of momentum are kg m/s.

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

What are the units of impulse?

Back

The units of impulse are Newton-seconds (N-s).

Front

How does mass affect momentum?

Back

Momentum is directly proportional to mass; as mass increases, momentum increases if velocity remains constant.

Front

How does velocity affect momentum?

Back

Momentum is directly proportional to velocity; as velocity increases, momentum increases if mass remains constant.

Front

What is the relationship between impulse and momentum?

Back

Impulse is equal to the change in momentum of an object: Impulse = Δp.

Front

If a biker has a mass of 75 kg and moves at 5 m/s, what is their momentum?

Back

375 kg m/s.

Front

What happens to momentum in a collision?

Back

In a closed system, the total momentum before the collision is equal to the total momentum after the collision.