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Phy 121
Your 'cq_1_04.1' 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 is moving at 10 cm/s when clock time is 4 seconds, and at 40 cm/s when clock time is 9 seconds.
Sketch a v vs. t graph and represent these two events by the points (4 sec, 10 cm/s) and (9 s, 40 cm/s).
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
My graph has two points with the intercepts (4 sec, 10 cm/s) and (9 sec, 40 cm/s)
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Sketch a straight line segment between these points.
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
I sketched the line segment
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What are the rise, run and slope of this segment?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
Rise = 30 cm/s
Run = 5 sec
Slope = 6 / 1 cm / s^2
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What is the area of the graph beneath this segment?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
The area of the graph beneath the segment is 75 cm, and is the distance traveled by the ball. (I found this by mulplying 30 cm/s * 5 sec and dividing by 2)
the area is greater than this; see the link at the end
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6-7 minutes
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I looked at your comments on a different assignment in which I was having trouble finding the Final Velocity. After reading your notes I understand what I was missing, the idea of find Final Velocity just drew a blank for some reason.
The discussion at the link should be helpful.
&#See any notes I might have inserted into your document. If there are no notes, this does not mean that your solution is completely correct.
Then please compare your solutions with the expanded discussion at the link
Solution
Self-critique your solutions, if this is necessary, according to the usual criteria. Insert any revisions, questions, etc. into a copy of this posted document. Mark any insertions with &&&& so they can be easily identified.If your solution is completely consistent with the given solution, you need do nothing further with this problem. &#