61 kg soccer player jumps vertically upwards and heads the 0.45 kg ball as it is descending vertically with a speed of 29 m/s. If the player was moving upward with a speed of 4.0 m/s just before impact, what will be the speed of the ball immediately after the collision if the ball rebounds vertically upwards and the collision is elastic?

1 answer

Use the conservation of momentum, and conservation of energy equations to find the velocities of the ball and person after collision. I will be happy to critique your thinking.