All of them.
And gravity is not a force!! It is an acceleration. It only becomes a force when it acts on a mass.
Doug
2006-10-02 21:37:49
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answer #1
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answered by doug_donaghue 7
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Gravity is one of the four forces of nature, along with the electromagnetic force and the strong and weak nuclear forces. It is an invisible force that is all-pervading. Perhaps one of the most impressive scientific breakthroughs of all time was Newton's universal law of gravitation, which is not only valid for falling apples but also for orbiting objects like the planets, moons and space vehicles. Newton concluded that there is a force of attraction between any two objects in the universe and the magnitude of this force (F) is given by:
F=G x m1 m2 / R'2
where m1 and m2 are the respective masses of the two objects, r is the distance between them and G is a constant known as the gravitational constant (G = 6.672 x 10-11 Nm²/kg²)
Mass is an intrinsic property of an object which is linked to the amount of matter it contains. The mass of an object is therefore the same wherever it is in the universe. However, the weight of an object is a result of gravity and therefore is dependent on its environment. When we measure the weight of an object on Earth it is in fact the gravitational force of attraction between the object and the Earth that is being measured. The best example of the difference between mass and weight can be seen in the film footage showing astronauts walking on the Moon
2006-10-03 04:51:14
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answer #2
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answered by karthik k 1
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Gravity includes all parts.....
2006-10-03 04:38:05
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answer #3
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answered by Wren M 2
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uhhmm to many gravity question and ths wun onlyy a scientis can xplane...u keep on asking idiotic questions from norml peepl!!
2006-10-03 07:44:31
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answer #4
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answered by Anonymous
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Mass and acceleration
2006-10-03 04:40:19
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answer #5
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answered by sures 3
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Your question is vague dear
Please make it clear
:-)
2006-10-03 04:36:13
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answer #6
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answered by rose 1
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matel
2006-10-07 03:29:14
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answer #7
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answered by mellbez 2
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I dunno
2006-10-03 04:39:24
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answer #8
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answered by Anonymous
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