Review Impulse and Momentum

Front

What does the impulse-momentum theorem state?

Back

The impulse on an object is equal to the change in momentum it causes.

Front

What is impulse?

Back

Impulse is the product of the average force applied to an object and the time duration over which it is applied, measured in Newton-seconds (N⋅s).

Front

How do you calculate impulse?

Back

Impulse = Force × Time.

Front

What is momentum?

Back

Momentum is the product of an object's mass and its velocity, represented as p = mv.

Front

How do you calculate momentum?

Back

Momentum = Mass × Velocity.

Front

What is the principle of conservation of momentum?

Back

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

Front

What happens to momentum in elastic collisions?

Back

In elastic collisions, both momentum and kinetic energy are conserved.

Front

What happens to momentum in inelastic collisions?

Back

In inelastic collisions, momentum is conserved, but kinetic energy is not.

Front

If two objects collide and stick together, what type of collision is it?

Back

It is an inelastic collision.

Front

Calculate the final speed of two carts (1.5 kg each) rolling towards each other with velocities of 2 m/s and -1 m/s after they stick together.

Back

Final speed = 0.5 m/s.