Suppose you stand in the water a meter or two from one end of a swimming pool. a. You push down hard once on a large beach ball floating on the water in front of you. What do you observe? b. Now you push ball a few tines (do not too many tines). Does the speed at which of waves move away from you depend on how frequently you push the ball up down? Explain. c. Draw a top view of the wave-crest pattern that you would see in the water at one instant of time. How does the distance between adjacent crests differ if you bob the ball up and down more frequently or less frequently?

Aball is thrown from the top of a building with an initial velocity of 21.9 m/s straight upward, at an initial height of 51.6 m above the ground. the ball just misses the edge of the roof on its way down, as shown in the figure. (a) determine the time needed for the ball to reach its maximum height. (b) determine the maximum height. (c) determine the time needed for the ball to return to the height from which it was thrown, and the velocity of the ball at that instant. (d) determine the time needed for the ball to reach the ground. (e) determine the velocity and position of the ball at t = 5.35 s.