Unit 6: Momentum and Impulse

Front

What is a perfectly inelastic collision?

Back

A collision where objects collide and stick together, resulting in a combined mass moving with a common velocity.

Front

What is the total momentum after a collision involving a moving object and a stationary object?

Back

The total momentum remains the same as before the collision, according to the law of conservation of momentum.

Front

What does the symbol 'J' represent in physics?

Back

Impulse.

Front

What is an elastic collision?

Back

A collision where objects bounce apart after colliding, conserving both momentum and kinetic energy.

Front

How do you calculate momentum?

Back

Momentum (p) is calculated using the formula p = mass (m) × velocity (v).

Front

What is the unit of momentum?

Back

The unit of momentum is kg·m/s.

Front

What is the difference between elastic and inelastic collisions?

Back

In elastic collisions, kinetic energy is conserved; in inelastic collisions, kinetic energy is not conserved.

Front

What happens to momentum in a closed system?

Back

Momentum is conserved in a closed system, meaning the total momentum before and after an event remains constant.

Front

If a 50 kg ball rolls at 5 m/s, what is its momentum?

Back

250 kg·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.