theory of acceleration
61Mechanics of planar particle motion — Classical mechanics Newton s Second Law History of classical mechanics  …
62Inertia — In common usage, however, people may also use the term inertia to refer to an object s amount of resistance to change in velocity (which is quantified by its mass), and sometimes its momentum, depending on context (e.g. this object has a lot of… …
63Newton's law of universal gravitation — Classical mechanics Newton s Second Law History of classical mechanics  …
64physical science — physical scientist. 1. any of the natural sciences dealing with inanimate matter or with energy, as physics, chemistry, and astronomy. 2. these sciences collectively. [1835 45] * * * Introduction the systematic study of the inorganic world …
65Kilogram — Kg redirects here. For other uses, see Kg (disambiguation). Kilogram A computer generated image of the international prototype kilogram (IPK). The IPK is the kilogram. The IPK, which is roughly the size of a golf ball, sits here alongside a ruler …
66Weightlessness — Zero gravity redirects here. For other uses, see Zero gravity (disambiguation). Zero G redirects here. For other uses, see Zero G (disambiguation). 0G redirects here. For other uses, see 0G (disambiguation). Weightlessness (or zero g) is the… …
67celestial mechanics — the branch of astronomy that deals with the application of the laws of dynamics and Newton s law of gravitation to the motions of heavenly bodies. [1815 25] * * * Branch of astronomy that deals with the mathematical theory of the motions of… …
68History of Physics — History of Physics † Catholic Encyclopedia ► History of Physics The subject will be treated under the following heads: I. A Glance at Ancient Physics; II. Science and Early Christian Scholars; III. A Glance at Arabian Physics; IV.… …
69Mechanics — This article is about an area of scientific study. For other uses, see Mechanic (disambiguation). Mechanics (Greek Μηχανική) is the branch of physics concerned with the behavior of physical bodies when subjected to forces or displacements, and… …
70Orbit — This article is about orbits in celestial mechanics, due to gravity. For other uses, see Orbit (disambiguation). A satellite orbiting the Earth has a tangential velocity and an inward acceleration …
