Momentum, Collisions, Impulse, Conservation of Momentum

Front

What is momentum?

Back

Momentum is the product of an object's mass and its velocity, represented by the equation p = m x v.

Front

What is the law of conservation of momentum?

Back

The law states that in a closed system, the total momentum before a collision is equal to the total momentum after the collision.

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 x Time.

Front

What is the unit of momentum?

Back

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

Front

What is an elastic collision?

Back

An elastic collision is a type of collision where both momentum and kinetic energy are conserved.

Front

What is an inelastic collision?

Back

An inelastic collision is a collision where momentum is conserved, but kinetic energy is not.

Front

What happens to the velocities of two objects that collide and stick together?

Back

Their combined velocity will decrease due to the conservation of momentum.

Front

What is the formula for calculating impulse?

Back

Impulse = Change in momentum = Force x Time.

Front

What is the difference between elastic and perfectly inelastic collisions?

Back

In elastic collisions, objects bounce off each other conserving kinetic energy, while in perfectly inelastic collisions, they stick together and move as one mass.

Front

What is the relationship between force and momentum?

Back

Force is the rate of change of momentum, expressed as F = Δp/Δt.