Question

A body of mass 2 kilogram is lifted up to a height of 10 meter and then allowed to fall freely. Find the potential energy and kinetic energy that it has just before touching the ground.

Answer 1

Mass of the body=2kg
Height lifted=10m
Let is takeg=10m/s^2
Potential energy=m*g*h
=2*10*10
=200 joules
Potential energy=Kinetic energy
(law of conservation of energy)
Kinetic energy=200 joules