Answer:
Explanation:
Energy possessed by body due to virtue of position is gravitational potential energy and due to motion is known as kinetic energy.
The sum of potential energy and kinetic energy is the mechanical energy. Energy can convert from one form to another but it cannot be created or destroyed.
When ball is at the top of the ramp, it possesses gravitational potential energy which converts to kinetic energy as it rolls down the ramp. The sum of kinetic energy and potential energy i.e. mechanical energy is always constant. Thus she must be studying about these three energies.
