In mathematics, the interaction between matter and the forces acting on it. Statics is the study of systems at rest and dynamics is the study of systems in motion under the influence of forces. Much of the theory of mechanics is built upon Newton's laws of motion and the equations of motion , which involve the relationships between masses and forces in terms of time, lengths, and angles.
Dynamics is concerned with the velocities and accelerations resulting from the action of forces.
The process of modelling required by the mathematics relies on the idealization of certain physical phenomena, to give mathematical entities, which can then be described geometrically and analytically. Frictionless impacts, perfectly inelastic bodies, and point particles are all such idealizations. Quantum mechanics is mechanics of systems which do not follow Newton's laws. The Oxford English Reference Dictionary 2. Newton's laws of motion A Dictionary of Science, Oxford University Press 3.