a) How much momentum does the wall absorb when struck by the tennis ball?© BrainMass Inc. brainmass.com March 21, 2019, 7:47 pm ad1c9bdddf
Because it is an elastic collision, the initial speed must be equal to the final speed, that is, the final speed is 20 m/s. In term of velocity, the final velocity is ...
In this exercise, students are asked to find the momentum the wall absorbed when it is struck by a tennis ball. The mass and the speed of the tennis ball is given and the collision is elastic. In the second part, the rate at which the tennis serving machine is given, students are asked to find the average force on the wall.