0 kg person jumps from rest off a 12.0 m high tower straight down into the water. Neglect air resistance during the descent. She comes to rest 3.00 m...

A 58.0 kg person jumps from rest off a 12.0 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 magnitude of the average force that the water exerts on the diver. This force is nonconservative.