After the ball leaves your hands it travels with a constant velocity in the X-direction (horizontal) and the only net force acting on it will be its weight in Y-direction (vertical) pulling it towards the center of the Earth. The only force that we should be concerned about after the projectile is released in the force due to gravity in vertical direction.
That's why a ball dropped straight down from a height h and a ball thrown from the same height h as a projectile will reach the ground at the same time. (ignoring air resistance)
2007-12-15 04:43:22
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answer #1
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answered by Rector 2
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Well, you've already got half-a-dozen answers but I'll give you my tried-and-true technique for identifying forces.
Objects can experience TWO kinds of forces:
(1) Forces from things that are touching the object.
(2) Forces from things that are NOT touching the object.
The first category are the "contact forces." This includes friction and air resistance.
The second category are the "field forces." You will only encounter two in undergraduate physics: gravity and electromagnetism.
So to answer your question: there's nothing in contact with the ball once it's in the air, so there are no contact forces (unless you want to count air resistance, which is complicated to model so most problems in high school ignore it completely). The only field force is that of gravity. Therefore the only force acting on the ball is the force of gravity.
2007-12-15 05:04:50
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answer #2
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answered by jgoulden 7
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The ball's acceleration is constant 9.81 m/s squared downwards.
Gravity constantly acts on it, and that is what makes it come down.
As Gravity overcomes the initial force you impart to the ball. it slows down, until it starts falling.
(All ignoring air resistance.)
2007-12-15 04:43:34
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answer #3
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answered by Anonymous
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properly the ball will upward thrust with the preliminary speed that brought about the ball to go and at its optimal ability ability the ball will shrink with an outstanding acceleration because of gravity with a cost of 9.81m/s^2...while an merchandise is going up the acceleration is destructive because of the fact the article is going against gravity yet while it is coming down it is aided by making use of gravity and for this reason an outstanding cost for the acceleration because of gravity
2016-11-03 08:56:12
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answer #4
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answered by ? 4
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a ball keep going after you throw it because the force that of which you throw is greater than the force of gravity pulling it down.F=mxa
2017-02-01 14:39:31
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answer #5
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answered by Anonymous
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Mostly gravity - a constant force. Some air resistance, depending on speed. If you want to be really pedantic, include the Archimedean upthrust.
2007-12-15 04:50:59
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answer #6
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answered by za 7
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acceleration is constant and downwards. Force is gravitational ( Fg ) and it is 9.8 Newtons, also downwards. Gravity is to only force acting on it.
2007-12-15 04:49:54
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answer #7
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answered by Brian K 2
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Gravity begins to pull it back to Earth.
2007-12-15 04:37:43
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answer #8
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answered by johnandeileen2000 7
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HOT POTATO
2014-11-04 06:56:47
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answer #9
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answered by Anonymous
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=O
2016-05-03 14:56:07
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answer #10
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answered by Anonymous
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