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Science of the action of forces on material bodies.
It forms a central part of all physical science and engineering. Beginning with Newton's laws of motion in the 17th century, the theory has since been modified and expanded by the theories of quantum mechanics and relativity . Newton's theory of mechanics, known as classical mechanics, accurately represented the effects of forces under all conditions known in his time. It can be divided into statics, the study of equilibrium , and dynamics , the study of motion caused by forces. Though classical mechanics fails on the scale of
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[c mediumvioletred] (as used in expressions)
{{link=celestial mechanics">celestial mechanics
fluid mechanics
quantum mechanics
soil mechanics
statistical mechanics