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Phy 121
Your 'cq_1_02.1' 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_02.1_labelMessages.txt **
The problem:
A ball starts with velocity 4 cm/sec and ends with a velocity of 10 cm/sec.
• What is your best guess about the ball's average velocity?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
My best guess at the ball’s average velocity is 7cm/s because 10cm/s+4cm/s=14cm/s/2=7cm/s.
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• Without further information, why is this just a guess?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
This is just a guess because we don’t know how lock the ball rolled or for how long.
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• If it takes 3 seconds to get from the first velocity to the second, then what is your best guess about how far it traveled during that time?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
My best guess is that the ball travelled 21cm in 3 seconds because the average velocity of the ball was 7cm/s at 3 seconds would be 21cm.
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• At what average rate did its velocity change with respect to clock time during this interval?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
The ball’s average rate of change in its velocity with respect to the clock during the given amount of time is 2cm/s because the difference in velocities is 6 and 6/3=2.
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&#Your work looks very good. Let me know if you have any questions. &#