Homework Help: physics

Posted by Kathy on Monday, November 5, 2012 at 12:21am.

A 50 kg diver leaps off the 20 meter diving board with a velocity of 5 m/s. What is his kinetic energy just before hitting the water?

physics - Elena, Monday, November 5, 2012 at 12:05pm
What is direction of initial velocity?
If v=5 m/s is downward velocity,
PE+KE1=KE2
mgh+mv1²/2 =mv2²/2
v2 =sqrt(2gh+v1²)

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