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 the product of the average force and the time duration of the force application.

Front

How does momentum change during a collision?

Back

In a closed system, the total momentum before a collision is equal to the total momentum after the collision, according to the law of conservation of momentum.

Front

What happens to momentum when two objects collide elastically?

Back

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

Front

What happens to momentum when two objects collide inelastically?

Back

In an inelastic collision, momentum is conserved, but kinetic energy is not; the objects may stick together 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

If the mass of an object is doubled, what happens to its momentum if its velocity remains constant?

Back

If the mass is doubled and velocity remains constant, the momentum also doubles.

Front

If the velocity of an object is doubled, what happens to its momentum?

Back

If the velocity is doubled, the momentum also doubles, since momentum is directly proportional to velocity.

Front

What is the relationship between impulse and momentum?

Back

Impulse is equal to the change in momentum of an object; mathematically, Impulse = Δp = FΔt, where F is force and Δt is the time duration.

Front

How does increasing collision time affect impact force?

Back

Increasing collision time decreases the impact force, as force is inversely proportional to the time duration of the collision for a given change in momentum.