A child and sled with a combined mass of 48.4 kg slide down a frictionless hill that is 7.15 m high. If the sled starts from rest, what is its speed at the bottom of the hill?

Answer 1

V^@=Vo^2 + 2g*h = 0 + 19.6*7.15 = 140.14
V = 11.84 m/s.

Answer 2

Correction: Change V^@ to V^2.