A 57.0 kg person jumps from rest off a 11.0 m high tower straight down into the water. Neglect air resistance during the descent. She comes to rest 3.00 m under the surface of the water. Determine the average force that the water exerts on the diver. This force is nonconservative. i know to use mgh=Fd... i think... but i dont know what distance or height to use or when you are supposed to incorporate the 3.00 m any help would be apprectiated..