Momentum & Impulse

Front

What is momentum?

Back

Momentum is the product of an object's mass and its velocity, represented by the equation 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 Impulse = Force x Time.

Front

What is the relationship between impulse and momentum?

Back

Impulse is equal to the change in momentum of an object. This is expressed as Impulse = Change in momentum.

Front

What is the formula for calculating change in momentum?

Back

Change in momentum = Final momentum - Initial momentum.

Front

What is the SI unit of momentum?

Back

The SI unit of momentum is kg m/s.

Front

What is the SI unit of impulse?

Back

The SI unit of impulse is also kg m/s.

Front

How do you calculate impulse if a force is applied?

Back

Impulse can be calculated using the formula Impulse = Force x Time.

Front

If an object has a mass of 10 kg and is moving at a velocity of 5 m/s, what is its momentum?

Back

Momentum = mass x velocity = 10 kg x 5 m/s = 50 kg m/s.

Front

What happens to momentum in a closed system?

Back

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

Front

What is the effect of a net force on an object's momentum?

Back

A net force acting on an object will change its momentum over time, as described by Newton's second law.