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Accelerated.ALL mass in the universe is constantly being accelerated by gravitational forces

from every other mass in the universe. Specifically, a satellite in orbit is constantly falling

toward the Earth under gravity - but because of the inertia of the satellite, it is continually

missing the Earth! In the absence of gravity, the satellite would proceed in a straight line

tangent to its current elliptical orbit.

And now, after that refreshing interlude, here is the answer to the question:

"Acceleration" does not mean "speeding up".

It means that either speed or direction is changing, (or both are changing).

Anything that's not moving in a straight line is in accelerated motion, because

its direction is changing.

A satellite is certainly not moving in a straight line.

Therefor its motion is accelerated.

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13y ago

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