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Phy 201
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):
vAvg = the change in velocity/2 = (10cm/sec -4cm/sec)/2 = 6cm/s/2 = 3cm/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 to determine a true average velocity we need the change in time of the object as well.
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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):
`ds = vAvg*`dt = 3cm/s*3s =9cm
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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):
change in velocity = 10cm/s-4cm/s= 6cm/s
aAvg = `dv/`dt = 6cm/s/3s = 2cm/s^2
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*#&!
&#Your work looks good. Let me know if you have any questions. &#