Question

what is conservation of energy ? explain with an example

Answer 1

The law of conservation of energy is one of the basic laws of physics along with theconservation of mass and the conservation of momentum.


For example, burning gasoline to power cars is an energy conversion process we rely on. The chemical energy in gasoline is convertedto thermal energy, which is then converted tomechanical energy that makes the car move. The mechanical energy has been converted tokinetic energy. When we use the brakes to stop a car, that kinetic energy is converted by friction back to heat, or thermal energy.


There are many examples for law of conversation of energy.
And conserved means "constant" or "not changing" in the whole system.

Answer 2

Explanation:

Conservation of energy, principle of physics according to which the energy of interacting bodies or particles in a closed system remains constant. ... For example, when a pendulum swings upward, kinetic energy is converted to potential energy.