Momentum and Impulse

Conservation of momentum when objects interact, and the impulse that changes it.

10 questions, free, marked as you go with a worked explanation on every one.

What this covers

What is the momentum of a 1500 kg car travelling at 20.0 m/s?
A force of 250 N acts on an object for 0.20 s. What is the impulse delivered?
A 2.0 kg cart moving at 3.0 m/s collides with a stationary 4.0 kg cart and they stick together. What is their common speed afterwards?
Why do cars have crumple zones?
What distinguishes an elastic collision from an inelastic one?
Which statements about conservation of momentum are correct? Select all that apply.
A rifle recoils when it is fired. Which principle best explains this?
A 0.145 kg baseball reaches the bat travelling at 38.0 m/s and leaves in the opposite direction at 42.0 m/s. The bat and ball stay in contact for 0.850 ms. What is the magnitude of the average force the bat exerts on the ball?
Use the table. What is the magnitude of Cart A's change in momentum, in kilogram metres per second?
A 3.0 kg ball moving right at 4.0 m/s collides head-on with a 1.0 kg ball at rest. After the collision the 3.0 kg ball continues in the same direction at 1.0 m/s. What is the speed of the 1.0 kg ball right after the collision?