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Phy 231
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.
** CQ_1_23.1_labelMessages **
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: ->->->->->->->->->->->-> :
Starting from rest, gravity pulls the wad of paper down. As the velocity grows by the acceleration due to gravity, the air resistance pushing the paper up also grows.
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What happens to the net force acting on it?
answer/question/discussion: ->->->->->->->->->->->-> :
net force = mass * gravity(down = positive) + mass * (-airesitance)
net force = mass * (gravity - air resistance)
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What happens to its acceleration?
answer/question/discussion: ->->->->->->->->->->->-> :
Since air resistance grows as velocity increases, the magnitude of acceleration towards earth gets smaller and smaller.
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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: ->->->->->->->->->->->-> :
Eventually Acceleration would become 0, and the wad would fall at a constant velocity. The net force would balance each other out:
mass*gravity = Mass * airResistance.
Mass * (gravity - airresistance) = Mass * 0
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&#Very good responses. Let me know if you have questions. &#