Momentum Practice Questions #
Question 1 #
Calculate the momentum of a 500g ball moving at a velocity of 20 m/s to the right. Give your answer in kg⋅m/s.
Question 2 #
A 40kg skateboard and rider system is moving at 3 m/s to the right. What is the velocity of the system after the rider jumps off backwards, giving themselves a velocity of 2 m/s to the left? The rider’s mass is 30kg.
Question 3 #
A 200g tennis ball moving at 15 m/s collides with a wall and bounces back at 10 m/s. Calculate the change in momentum of the ball.
Question 4 #
Two balls collide in an elastic collision. Ball A has a mass of 1kg and is moving at 5 m/s to the right. Ball B has a mass of 2kg and is stationary. After the collision, Ball A moves at 1 m/s to the left. Calculate the velocity of Ball B after the collision.
Question 5 #
A 100g bullet is fired from a 4kg rifle. The bullet leaves with a velocity of 400 m/s. Calculate the recoil velocity of the rifle. (Assume the rifle is free to move and initially at rest)
