Phy 201
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: ->->->->->->->->->->->-> scussion:
#$&* If the object is speeding up, it seems quite apparent that the air resistance is decreasing.
an object can speed up with an increasing force, a constant force or a decreasing force; as long as the net force is in the direction of motion the object will speed up
* What happens to the net force acting on it?
answer/question/discussion: ->->->->->->->->->->->-> scussion:
#$&* Thinking in terms of air resistance, maybe as the object speeds up, the air resistance becomes greater. And maybe in that case, the net force acting on the object will be decreased because the air resistance is working against the direction of motion.
Good.
* What happens to its acceleration?
answer/question/discussion: ->->->->->->->->->->->-> scussion:
#$&* The acceleration speeds up according to the height of the dropping point in a fashion of (height * 9.8m/s^2). Since it's the acceleration due to gravity, I don't see any type of force or anything that can oppose gravity. So I think acceleration remains unaffected...
* If it is dropped from a much higher point, what would happen to the net force and the acceleration?
answer/question/discussion: ->->->->->->->->->->->-> scussion:
#$&* If the dropping point is much higher, then the acceleration will be that much greater. But I also think that if the height is raised, the net force acting on the object will, again, become decreased because the air resistance will have more time and distance to work against the object.
acceleration has nothing to do with altitude
change in velocity might be greater, but acceleration won't
you are right about air resistance
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about 15 minutes...
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Solution
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