A 62.0 kg diver falls from rest into a swimming pool from a height of 3.50 m. It takes 1.92 s for the diver to stop after entering the water. Find the magnitude of the average force exerted on the diver during that time.
First, calculate the velocity when he hits the water using:
V(f)^2 = V(o)^2 + 2as
Then, calculate the deceleration as he goes through the water using:
V(f) = V(o) + at.
Then you can get the force once you know a with F = ma.