Phy121
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.
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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: ->->->->->->->->->->->-> :
9 seconds would be half way between 5sec and 13 sec
• What is the velocity at the midpoint of this interval?
answer/question/discussion: ->->->->->->->->->->->-> :
The average velocity will be 3 cm/sec. Change in distance was 24 cm and the change in time was 8 sec.
you appear to be confusing displacement with velocity.
• How far do you think the object travels during this interval?
answer/question/discussion: ->->->->->->->->->->->-> :
By the midpoint mark of time 9 seconds the object should have traveled 12cm which would make its position be at 28 cm.
• By how much does the clock time change during this interval?
answer/question/discussion: ->->->->->->->->->->->-> :
Clock time changes by 8 seconds ; 13sec -5 sec = 8 sec
• By how much does velocity change during this interval?
answer/question/discussion: ->->->->->->->->->->->-> :
The change would be 3cm/sec.
• What is the average rate of change of velocity with respect to clock time on this interval?
answer/question/discussion: ->->->->->->->->->->->-> :
vAve =3 cm/sec
• What is the rise of the graph between these points?
answer/question/discussion: ->->->->->->->->->->->-> :
Rise would be 8 sec
• What is the run of the graph between these points?
answer/question/discussion: ->->->->->->->->->->->-> :
Run would be 24 cm
• What is the slope of the graph between these points?
answer/question/discussion: ->->->->->->->->->->->-> :
Slope= rise/run so we would have 8sec/24 cm = 1sec/3cm =.37
• What does the slope of the graph tell you about the motion of the object during this interval?
answer/question/discussion: ->->->->->->->->->->->-> :
That it is making an increase in velocity as it travels. ?
• What is the average rate of change of the object's velocity with respect to clock time during this interval?
answer/question/discussion: ->->->->->->->->->->->-> :
Would it be 3cm/sec?
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30 minutes
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&#Please compare your solutions with the expanded discussion at the link
Solution
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