Momentum and Impulse

Front

What is momentum?

Back

Momentum is the product of an object's mass and its velocity, represented by the formula p = mv, where p is momentum, m is mass, and v is velocity.

Front

What is impulse?

Back

Impulse is the change in momentum of an object when a force is applied over a period of time, calculated as Impulse = Force × Time.

Front

Is momentum conserved in elastic collisions?

Back

Yes, momentum is conserved in elastic collisions.

Front

What factors affect the momentum of an object?

Back

The momentum of an object depends on its mass and velocity.

Front

How do you calculate impulse?

Back

Impulse can be calculated using the formula Impulse = Force × Time.

Front

What is the unit of momentum?

Back

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

Front

What is the unit of impulse?

Back

The unit of impulse is Newton second (N s) or equivalently kilogram meter per second (kg m/s).

Front

If a 0.4 kg object is rolling at 2 m/s, what is its momentum?

Back

Momentum = mass × velocity = 0.4 kg × 2 m/s = 0.8 kg m/s.

Front

What happens to momentum in an inelastic collision?

Back

In an inelastic collision, momentum is conserved, but kinetic energy is not.

Front

What is the relationship between force, time, and impulse?

Back

Impulse is equal to the product of the average force applied and the time duration over which it is applied.