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.

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 force and time (Impulse = Force x Time).

Front

What is an inelastic collision?

Back

An inelastic collision is a type of collision where the colliding objects stick together after the collision, resulting in a loss of kinetic energy.

Front

What is an elastic collision?

Back

An elastic collision is a collision in which both momentum and kinetic energy are conserved.

Front

What is the law of conservation of momentum?

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 does increasing the time of impact reduce injury in a collision?

Back

Increasing the time of impact reduces the force experienced by the body, as force is equal to the change in momentum divided by the time taken for that change.

Front

What factors affect the momentum of an object?

Back

The momentum of an object depends on its mass and velocity.

Front

What is the unit of momentum?

Back

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

Front

If a car with a momentum of 10,800 kg m/s collides with a stationary object, what is the total momentum after the collision?

Back

The total momentum after the collision will be the same, 10,800 kg m/s, due to the conservation of momentum.

Front

What happens to momentum in a closed system during a collision?

Back

In a closed system, the total momentum before the collision is equal to the total momentum after the collision.