A History of Mechanics

able acceleration according action appears applied assumed attraction become body called carried cause centre of gravity Century classical complete concept concerned condition connection considered constant continuous corresponding Descartes described determined direction distance dynamics Earth effect element energy equal equations equilibrium Euler example existence experiment expressed fact fall field fluid function Galileo given hand heavy Huyghens hypothesis ideas impact impetus increases Lagrange length lever light living forces mass matter means measure mechanics motion moving natural necessary observation obtained original particle physical plane position possible principle problem produced proportional Proposition quantity quantum quantum mechanics reference relation relative remains remarked represented resistance respect rest result sense shows simple solution space special relativity starts supposed surface taken theory travelled true velocity wave weight World writes