Phy 121
Your 'cq_1_23.1' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
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A wad of paper is dropped from a second-story balcony and falls through still air to the ground.
• As it speeds up, what happens to the air resistance it encounters?
answer/question/discussion: ->->->->->->->->->->->-> :
The force of the air resistance will increase until it matches that of the weight of the wad of paper.
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• What happens to the net force acting on it?
answer/question/discussion: ->->->->->->->->->->->-> :
The netforce would decrease.
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• What happens to its acceleration?
answer/question/discussion: ->->->->->->->->->->->-> :
The acceleration will increase the further the object falls.
if net force decreases, then acceleration (which is equal to net force / mass) must also decrease.
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• If it dropped from a much higher point, what would happen to the net force and the acceleration?
answer/question/discussion: ->->->->->->->->->->->-> :
If the wad of paper is dropped from a higher point it will reach terminal velocity. This means that the force of air resistance is equal to the weight of the paper and it has accelerated to it’s full speed. It’s speed will not increase any more.
The netforce will become zero because the two forces are equal.
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15 min.
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No revision is requested unless you have questions, but you should take a look at the discussion at the link given below.
&#Please compare your solutions with the expanded discussion at the link
Solution
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