Kinetic energy is the energy possessed by an object due to its motion. It can be calculated using the formula:

KE = 0.5 * mass * velocity^2

Where KE represents the kinetic energy, mass is the mass of the object, and velocity is its speed. This formula shows that kinetic energy is directly proportional to both the mass and the square of the velocity.

An everyday example of kinetic energy is seen when a car is in motion. The faster the car is traveling, the greater its kinetic energy will be. Another example is a moving ball, where its kinetic energy increases as it gains speed. On the other hand, when the car or ball comes to a stop, their kinetic energy is reduced to zero.

Kinetic energy can be observed in various forms, such as the movement of wind turbines converting wind energy into electricity, or the generation of heat when a moving object rubs against another object, resulting in friction.