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Phy 201
Your 'cq_1_03.1' 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_03.1_labelMessages.txt **
The problem:
A ball starts with velocity 0 and accelerates uniformly down a ramp of length 30 cm, covering the distance in 5 seconds.
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What is its average velocity?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
30 cm/ 5 seconds= 6 cm/s
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If the acceleration of the ball is uniform then its average velocity is equal to the average of its initial and final velocities.
You know its average velocity, and you know the initial velocity is zero.
What therefore must be the final velocity?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
6cm/s
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According to the information given here, the final and average velocities are different. This result is identical to your result for the average velocity.
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By how much did its velocity therefore change?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
6 cm/s
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What was the initial velocity?
What was the final velocity?
By how much did the velocity therefore change?
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At what average rate did its velocity change with respect to clock time?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
3 cm/s /5 sec = .6 cm/s
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This calculation will not result in the requested rate.
You need to apply the definition of the rate of change to this question.
Please indicate in detail how you do so.
Also be sure the units of your result follow from the units of your calculation.
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What would a graph of its velocity vs. clock time look like? Give the best description you can.
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
It would have a line increasing with a slope of 6
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