Question

A 0.060 kg ball hits the ground with a speed of –32 m/s. The ball is in contact with the ground for 45 milliseconds and the ground exerts a +55 N force on the ball.

What is the magnitude of the velocity after it hits the ground?

9.3 m/s
12 m/s
41 m/s
73 m/s

Answer 1

9.3 m/s.........................