Potential energy and kinetic energy are closely related to one another, so that an object located in a high position has the maximum potential energy, while its potential energy decreases as the object falls down. In the meantime, the kinetic energy of the object is increased as the velocity of travel increase. At this time, the amount of increase of kinetic energy is the same with the decrease in the potential energy. This momentary energy is not newly created, but a result of the energies shifting from one type to another. Therefore, at any point along the course of travel, the sum of the kinetic energy and the potential energy are the same.