The unit of measurement in the International System of Units (SI) of energy is the joule, which is the energy transferred to an object by the work of moving it a distance of one metre against a force of one newton.Ĭommon forms of energy include the kinetic energy of a moving object, the potential energy stored by an object's position in a force field ( gravitational, electric or magnetic), the elastic energy stored by stretching solid objects, the chemical energy released when a fuel burns, the radiant energy carried by light, and the thermal energy due to an object's temperature. Energy is a conserved quantity the law of conservation of energy states that energy can be converted in form, but not created or destroyed. In physics, energy is the quantitative property that must be transferred to a body or physical system to perform work on the body, or to heat it.
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