Answer to Question #66174 in Physics for Ann

Question

Fred jumps from a cliff to a deep pool of water. It took him 3.5 seconds to reach the water. Assuming that air resistance is negligible and the acceleration due to gravity is 9.8m/s/s find:

a)Fred's speed upon impact with the water

b) The height of the cliff

Upon impact with the water Fred it brought to rest in a time of 1.2 seconds. Determine the average acceleration of Fred during this time.