What is Energy?

The capacity of a man that allows him to do work is called energy. In simple words, energy is the ability to work. It is in scalar quantity and has only magnitude and no direction. energy can neither be created nor destroyed, it can only change in its form. Energy can be found in many things, and so there are many forms of energy. The most important types of energy are kinetic energy and potential energy. 

Kinetic energy refers to the energy of a body due to its movement or motion. It refers to the work that is required to accelerate a body of the given mass differentiating it from its velocity. While acceleration after the body gains energy, it maintains kinetic energy until its speed changes.

The formula of kinetic energy is –

12mv212��2

Hence from the formula given above, we can state:

1. The kinetic energy of a body gets doubled whenever its mass gets doubled.
2. If the mass of a body is halved, then the kinetic energy is also halved.
3. The kinetic energy of a mass increases by four times when the velocity doubles.