Momentum and Impulse Review - AP Physics 1

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 the product of the average force and the time duration, represented by the formula J = FΔt.

Front

Why is it beneficial to bend your knees when landing?

Back

Bending your knees increases the time over which you come to a stop, reducing the force experienced by your body (F = Δp/Δt).

Front

How do you calculate the final velocity of an object in free fall?

Back

Use the formula v = √(2gh), where g is the acceleration due to gravity (approximately 9.81 m/s²) and h is the height from which it falls.

Front

What is the principle of conservation of momentum?

Back

The total momentum of a closed system remains constant if no external forces act on it.

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

What is the relationship between impulse and momentum?

Back

Impulse is equal to the change in momentum of an object (J = Δp).

Front

If two objects collide and stick together, what type of collision is it?

Back

It is an inelastic collision.

Front

What is the formula for calculating impulse?

Back

Impulse (J) can be calculated using the formula J = FΔt, where F is the average force and Δt is the time duration.