Question

A boy throws a ball with velocity 'v' towards a car approaching him at velocity 'V'. What is the speed with which the ball hits the boy after collision?

Answer 1

Answer:

you can see the pic above.

Explanation:

As each reaction has an equal and opposite reaction according to the newton's law. the ball will be back to the boy with same speed + the speed of car i.e. 2 times the ball's original speed.