Question

Tarzan, an 85 Kg jungle brute, was running along a branch at a speed of 7.5 m/s 15 m above a level jungle floor. He grabs a 17 m vine and swings up to the maximum height where he grabbed a 25 m vine hanging at a 45o angle and swung on. At the bottom of the swing he let go and landed on the edge of the level jungle floor right on a large banana leaf at the top of a 38o hill and he slid down the hill without friction for a total distance of 85 m where the hill ended in a 25m cliff with a lagoon below. If he landed in the water and dove straight in to a depth of 3.2 m, what was his speed when he hit the water?