A 75.0 kg diver steps off a diving board and drops straight down into the water. The water provides an upward average net force 1060 N. If the diver comes to rest 4.9 m below the water's surface, what is the total distance between the diving board and the diver's stopping point underwater?

Answer 1

Work done opposing the upward buoyant force equals P.E loss from the diving board to the stopping point

1060N*4.9 m = M g X
M g = 735 N
X is the distance you want.

X = (1060/735)4.9 = 7.1 meters

The height of the diver is being neglected here.