The instant an object is released as it is thrown upwards, it begins to accelerate downward. This downward acceleration is caused by gravity (the force of weight, m*g, acting downward on the object). Although the object may continue to travel upwards for a brief time, it is continually slowing in the upward direction as it accelerates towards the ground.
Objects "fall" towards the ground (in the direction of the center of the Earth's mass) since that is the direction of the force of gravity is exerted on them. An object cannot "fall" up since there is no net force acting in that direction.
2006-06-10 05:55:50
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answer #1
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answered by mrjeffy321 7
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When thrown upward a thing continues upward until gravity overcomes the force moving it upward. Then gravity pulls it down.
2006-06-10 12:42:49
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answer #2
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answered by Chug-a-Lug 7
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Gravity
2006-06-10 14:22:24
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answer #3
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answered by Zeratul 3
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I think the point asked has been missed. The person appears to question; does gravitational energy become zero before an object is thrown upward, and it does - but it is just in relation to the upward thrown object.
All objects in earth's gravitational field are continually being accelerated, whether they appear to be so or not.
2006-06-10 13:41:40
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answer #4
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answered by Anonymous
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Due to gravity of earth
2006-06-10 13:57:49
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answer #5
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answered by --> ( Charles ) <-- 4
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dude how old are you? Arent you sopposed to know this? It's gravity and no offence but, how could you not know that?
2006-06-10 12:34:56
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answer #6
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answered by Fire Humps! 1
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gravity
2006-06-10 12:32:03
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answer #7
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answered by Poutine 7
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its gravity DUH!!!!!!!!!!!
2006-06-10 13:22:24
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answer #8
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answered by spookes_shivers 1
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