Impulse Physics

Front

Definition of impulse

Back

The time integral of net force that causes a change in momentum.

Front

If the change of momentum of an object is 50kg m/s, what is the impulse?

Back

50 kg m/s.

Front

What is impulse in physics?

Back

A measure of the force applied over time.

Front

An object has an initial momentum of 30kg m/s and ends with a momentum of 40kg m/s. What impulse caused this?

Back

10kg m/s.

Front

What is the difference between a car hitting a wall vs. a car hitting a hay stack?

Back

The collision time of the car hitting the hay stack is greater.

Front

Formula for impulse

Back

Impulse = Force × Time.

Front

What does a greater impulse indicate?

Back

A greater change in momentum.

Front

How is impulse related to momentum?

Back

Impulse is equal to the change in momentum.

Front

What happens to impulse if the time of contact increases?

Back

Impulse increases.

Front

What is the unit of impulse?

Back

Newton-second (Ns) or kg m/s.