Unit 4 Momentum and Collisions

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 the principle of conservation of momentum?

Back

The principle of conservation of momentum states that in a closed system, the total momentum before an event (like a collision) is equal to the total momentum after the event.

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

How does mass affect momentum?

Back

An increase in mass will result in a proportional increase in momentum if velocity remains constant, as momentum is directly proportional to mass.

Front

What happens to momentum in elastic collisions?

Back

In elastic collisions, both momentum and kinetic energy are conserved.

Front

What happens to momentum in inelastic collisions?

Back

In inelastic collisions, momentum is conserved, but kinetic energy is not conserved; some kinetic energy is transformed into other forms of energy.

Front

What is the relationship between impulse and momentum?

Back

Impulse is equal to the change in momentum of an object, expressed as Impulse = Δp = p_final - p_initial.

Front

What is the formula for calculating momentum?

Back

The formula for calculating momentum is p = mv, where p is momentum, m is mass, and v is velocity.

Front

What is the effect of a force applied over time on momentum?

Back

A force applied over time changes the momentum of an object; the longer the force is applied, the greater the change in momentum.

Front

What is a perfectly inelastic collision?

Back

A perfectly inelastic collision is a type of collision where two objects stick together after colliding, resulting in maximum kinetic energy loss.