Impulse & Momentum

Front

What is the SI unit for momentum?

Back

kg·m/s

Front

If an object weighs more on Mars than on Earth, will its momentum change?

Back

No, momentum depends on mass and velocity, not weight.

Front

What is the formula for momentum?

Back

p = mv (momentum = mass × velocity)

Front

How does doubling the mass of an object affect its momentum if velocity remains constant?

Back

The momentum doubles.

Front

What happens to momentum when an object comes to a complete stop?

Back

The momentum becomes zero.

Front

If two objects have the same momentum, how do their masses and velocities relate?

Back

If one mass is greater, its velocity must be lower, and vice versa.

Front

What is impulse?

Back

Impulse is the change in momentum, calculated as force multiplied by the time over which it acts.

Front

How is impulse related to momentum?

Back

Impulse = Δp (change in momentum)

Front

What is the effect of a greater braking force on stopping time?

Back

A greater braking force reduces stopping time.

Front

If a car of mass m stops in time t, how long will it take to stop a car of mass 2m with the same force?

Back

2t.