Force. But I think you mean "velocity" not "acceleration" unless you are talking about falling objects.
2006-10-14 06:00:34
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answer #1
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answered by Seeker 4
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Not exactly correct.
Newton's Law says a body stays at rest or stays in motion unless acted on by an external force. This is sometimes called the law of inertia because inertia is what keeps a body moving or at rest, depending on the body's initial state.
So when a body is moving, it is moving at a constant rate...there is no acceleration; the body maintains a constant velocity, not acceleration as you mention. And the body maintains that constant velocity until there is a net external force applied to it.
In math talk, this can be expressed as f = F(+) - F(-) = Ma; where f is the net force, F(+) is all forces pushing the body along, F(-) is all the forces tugging at it, M is the mass of the body, and a is its acceleration. So if f = 0 = Ma, we can see that a = 0 because M is always positive. Thus, when the net forces are zero on a body of mass M, it will stay in motion or stay at rest because its velocity will not change (no acceleration).
2006-10-14 06:02:56
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answer #2
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answered by oldprof 7
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it is not so much a change in anything
An object maintains a constant acceleration until it is acted upon by an outside force. Gravity - air resistance - the side of your head - etc etc.
2006-10-14 05:57:56
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answer #3
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answered by oldhippypaul 6
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this is a question about inertia.
maintains constant momentum unless there is a force acting upon it.
constant acceleration, sounds like perpetual motion machine! sign me up or put me on top of that gravity well with enough oxygen and a really great snow board.
2006-10-14 05:52:48
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answer #4
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answered by WhoKnows?1995 4
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The Force Acting On it Or a Change In it's Mass?
2006-10-14 06:02:09
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answer #5
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answered by Anonymous
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this is an example of Newtons first law of motion "an object at rest stays at rest untill acted upon by an outside force, an object in motion continues in motion unless acted upon by an outside force) here on earth, the force of friction (an "outside force") will eventually slow and stop objects but in space there is no friction to slow down an object so it will continue in motion until acted upon by an outside force
2006-10-14 07:07:33
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answer #6
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answered by mcdonaldcj 6
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Unless there is a change in direction and the force experienced by it
2006-10-14 05:53:14
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answer #7
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answered by Enrique 2
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Force applied
2006-10-14 05:52:27
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answer #8
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answered by kapilbansalagra 4
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outside force acting upon it
2006-10-14 05:55:24
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answer #9
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answered by teemu6209 1
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whatever is powering it from behind, or pulling it from whatever direction it is travelling in!..Or if it suddenly hits something, or something hits it..or you forgot to let it go when you threw it..or you accidently sat on it!..
2006-10-14 06:00:56
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answer #10
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answered by paranthropus2001 3
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