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.
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The problem:
A ball starts with velocity 4 cm/sec and ends with a velocity of 10 cm/sec.
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What is your best guess about the ball's average velocity?
answer/question/discussion: ->->->->->->->->->->->-> scussion (start in the next line):
7 cm/s
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Without further information, why is this just a guess?
answer/question/discussion: ->->->->->->->->->->->-> scussion (start in the next line):
We don't know exactly how the ball travelled and if in may have gone fast before slowing down.
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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: ->->->->->->->->->->->-> scussion (start in the next line):
21 cm
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At what average rate did its velocity change with respect to clock time during this interval?
answer/question/discussion: ->->->->->->->->->->->-> scussion (start in the next line):
2 cm/s
this would be (6 cm/s) / (3 s) = 2 cm/s^2, not 2 cm/s.
Note that you do need to briefly show how you get your results.
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3 mins
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&#Good work. See my notes and let me know if you have questions. &#