Momentum, Collisions & 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 the formula for calculating momentum?

Back

p = mv, where p is momentum, m is mass, and v is velocity.

Front

What happens to the momentum of an object when its velocity decreases?

Back

The momentum of the object decreases because momentum is directly proportional to velocity.

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 an inelastic collision?

Back

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

Front

How do you calculate the change in momentum?

Back

Change in momentum can be calculated using the formula: Change in momentum = Force × Time.

Front

If a 75 kg biker is moving at 5 m/s, what is their momentum?

Back

375 kg m/s (calculated as p = mv = 75 kg × 5 m/s).

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

What is the relationship between impulse and momentum?

Back

Impulse is equal to the change in momentum of an object.

Front

What is the unit of momentum?

Back

The unit of momentum is kg m/s.