Question

State the Law of conservation of energy

Answer 1

The lawof conservation of energy is a law of science that states that energy cannot be created or destroyed, but only changed from one form into another or transferred from one object to another.

The law of conservation of energy can be seen in these everyday examples of energy transference:

• Water can produce electricity. Water falls from the sky, converting potential energy to kinetic energy. This energy is then used to rotate the turbine of a generator to produce electricity. In this process, the potential energy of water in a dam can be turned into kinetic energy which can then become electric energy.
• When a moving car hits a parked car and causes the parked car to move, energy is transferred from the moving car to the parked car.
• When you push a book across the table, the energy from your moving arm is transferred from your body to the book, causing the book to move.