Momentum & Impulse

Front

What is momentum?

Back

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

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

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 impulse calculated?

Back

Impulse is calculated by multiplying the force applied to an object by the time duration for which the force is applied.

Front

What is the relationship between impulse and momentum?

Back

The impulse-momentum theorem states that the impulse on an object is equal to the change in momentum it causes.

Front

If two objects collide and stick together, what happens to their velocities?

Back

Their velocities will decrease after the collision.

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

What happens to momentum in an elastic collision?

Back

In an elastic collision, both momentum and kinetic energy are conserved.

Front

What happens to momentum in an inelastic collision?

Back

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

Front

Calculate the impulse if a force of 20 N acts for 0.3 s.

Back

Impulse = Force × Time = 20 N × 0.3 s = 6 N.s.