A 550 g cart is released from rest on a frictionless, 45 ° ramp, 120 cm from the bottom of the ramp. It rolls down, bounces off a rubber block at the bottom, and then rolls 80 cm back up the ramp. A high-speed video shows that the cart was in contact with the rubber block for 25 ms. What was the magnitude of the average force exerted on the cart by the block?

A 550 g cart is released from rest on a frictionless, 45 ° ramp, 120 cm from the bottom of the ramp. It rolls down, bounces off a rubber block at the bottom, and then rolls 80 cm back up the ramp. A high-speed video shows that the cart was in contact with the rubber block for 25 ms. What was the magnitude of the average force exerted on the cart by the block?