Daniel Bernoulli's kinetic theory of matter states that all things – liquids, solids or gases – are made up of atoms and molecules that are in constant motion. The theory also states that collisions between atoms and molecules are elastic.
In 1738, Swiss pharmacist and mathematician Daniel Barnoullli's publications laid the basis for the kinetic theory of gases. His explanation of Boyle's law is said to have made the initiation of the kinetic theory of gases.
Kinetic energy is an expression of the fact that a moving object can influence anything that it hits; it quantifies the amount of work the object can do as a result of its motion. The total mechanical energy of an object is the sum of its kinetic energy and potential energy. The total energy of an isolated is subject to the conversion of energy principle.
For an object of finite size, kinetic energy is called translational kinetic energy of the mass, which distinguishes it from rotational kinetic energy it posses. The total kinetic energy of the mass can be expressed as the sum of the translational kinetic energy of the center of mass; it should also be expressed as the kinetic energy of rotation about its center of mass.