Question

a mass of 10kg in dropped at a height of 50cm find its 1 potential energy just before dropping 2 kinetic energy just before dropping 3 velocity with which it hits the ground (g=10m/s)

Answer 1

Potential energy will be mgh
Where g is acceleration due to the gravity

Kinetic energy will be 0 as the body is in rest

Velocity with which it hit the ground will be root over 2gH
Where h is height.