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At what rate does gravity pull objects down to earth?
Question Date: 2005-01-09
Answer 1:

The gravitational acceleration that we feel on the surface of the Earth is (approximately) governed by the following equation:

a = GM / R^2

G = the Gravitational constant (which presumably is the same everywhere in the universe)
M = mass of the Earth (in kilograms, for example)
R = radius of the Earth (in meters, for example)
For the Earth, if you plug in the appropriate numbers, you get
acceleration a equals 9.8 meters per second squared.

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