Tony Hawk skates down a ramp. If he is moving at 5.4 m/s at the bottom of the ramp and has a mass of 82 kg, how tall was the ramp?
m g h = (1/2) m v^2
so
h = (1/2) (v^2/g)
mass has nothing to do with it
so
h = (1/2) (v^2/g)
mass has nothing to do with it