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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.
What is its average velocity?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
6cm/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):
12cm/s
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By how much did its velocity therefore change?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
6cm/s
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What is the initial velocity?
What is the final velocity?
What therefore is the change in velocity?
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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):
1.2cm/s
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This rate will not have units of cm/s.
You need to show the details of your calculation and your reasoning.
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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):
increasing at an increasing rate
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Increasing from what value to what value, over what time interval?
Why do you think the graph is increasing at an increasing rate?
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*#&!
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Generally you need more detail in your solutions. Asserting just an answer doesn't tell me where you went wrong and limits my ability to provide helpful comments.
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