Momentum

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

How is momentum calculated for a moving object?

Back

Momentum (p) is calculated using the formula p = mv, where m is the mass of the object in kilograms and v is its velocity in meters per second.

Front

What is the unit of momentum?

Back

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

Front

If a 1000-kg car is moving southward at 20 m/s, what is its momentum?

Back

20000 kg * m/s south.

Front

If a 1000-kg car is moving northward at 20 m/s, what is its momentum?

Back

20000 kg * m/s north.

Front

Which has more momentum: an elephant running or an ant walking?

Back

An elephant running has more momentum than an ant walking due to its greater mass and speed.

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.

Front

What is impulse?

Back

Impulse is the change in momentum of an object when a force is applied over a period of time, represented by the formula Impulse = Force x Time.

Front

How is impulse related to momentum?

Back

Impulse is equal to the change in momentum, meaning Impulse = Δp (where Δp is the change in momentum).

Front

What is the principle of conservation of momentum?

Back

The principle of conservation of momentum states that the total momentum of a closed system remains constant if no external forces act on it.