Question

State the factors affecting the kinetic energy of a body.

Answer 1

1. Kinetic energy is the energy possessed by a body by virtue of its motion.
2. Mathematically kinetic energy is defined as $KE=\frac{1}{2}m{v}^2$ where m= mass of the body and v= velocity of the body.
3. Hence the factors affecting kinetic energy are mass and velocity, so if we change any one or both of these two factors, then the kinetic energy of the body will change.
4. The greater the mass of the body, the higher is its kinetic energy
5. The more the velocity of the body, the higher its kinetic energy.
6. Examples of kinetic energy are running water, bullets leaving from a gun, running train, etc