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Phy 201
Your 'cq_1_02.2' 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_02.2_labelMessages **
The problem:
A graph is constructed representing velocity vs. clock time for the interval between clock times t = 5 seconds and t = 13 seconds. The graph consists of a straight line from the point (5 sec, 16 cm/s) to the point (13 sec, 40 cm/s).
What is the clock time at the midpoint of this interval?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
(40+16)/2 , (13+5)/2
P = (9,28)
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What is the velocity at the midpoint of this interval?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
28cm/sec
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How far do you think the object travels during this interval?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
40cm/sec - 16cm/sec = 24cm/sec
13sec - 5sec = 8sec
24cm/sec / 8sec = 3cm
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24 cm / sec / (8 sec) is the correct calculation, but the units do not come out in cm.
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By how much does the clock time change during this interval?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
13sec - 5sec = 8sec
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By how much does velocity change during this interval?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
40sm/sec - 16cm/sec 24cm/sec
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What is the average rate of change of velocity with respect to clock time on this interval?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
(40-16) / (13-5)
24/8
3cm/sec
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Your quantities have units.
Your calculation is 24 cm/sec / (8 sec).
The units of the result are not cm / sec.
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Very good, except for the units.
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