Please help I am stuck

Question

If the kinetic energy of a 3.8 kg falling rock is 3,760 J, the rock's speed is ____ m/s.

Answer 1

Kinetic Energy = 1/2 ( MV² )

M = mass = 3.8Kg , V = Velocity =?

Given KE = 3760 J = 1/2 (3.8V ² )

V² = 1978.95

Gives

V= 44.5m/s