Question

If a 10 kg object has 200 J of gravitational potential energy, how high was has it been lifted above the ground?

Answer 1

Potential energy is possessed by the body while at rest while the body in motion possesses kinetic energy.
Potential energy is given by mgh where m is the mass of the body, g is the gravitational acceleration(9.8m/s^2) and h is the height.
Therefore, 200J = 10  × 9.8 ×h
                        h = 200/98
                        h = 2.041 m