Chapter 12, Problem 13P

& Hitting tennis balls against a wall A 0.058-kg tennis ball, traveling at 25 m/s, hits a wall, rebounds with the same speed in the opposite direction, and is hit again by another player, causing the ball to return to the wall at the same speed. The collision of the ball with the wall lasts 1 ins. The ball returns to the wall once every 0.60 s. (a) Determine the average force exerted on the ball during a single collision and the force that the ball exerts on the wall averaged over the time between collisions. State the assumptions that you made (b) If 10 people are practicing against a wall with an area of ${\text{30**\#x00A0;m}}^{\text{2}}$, what is the average pressure of the 10 tennis balls against the wall?