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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):
So I sketched a graph and my x axis would be “seconds” and my y axis would be representing “cm”. My first plot on the graph was 4, 10 and the next plot was 9, 40. My graph started in the top right of the graph and extended up towards the further top right of the graph forming a straight line in between the two plots.
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• Sketch a straight line segment between these points.
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
I sketched a line segment in between the two points and it formed a straight line. The line would be increasing towards the top right of the graph.
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• What are the rise, run and slope of this segment?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
M= 40-10/9-4
M= 30/5
M=6
@& You did well with the slope, except that you didn't include units with your quantities.*@
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• What is the area of the graph beneath this segment?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
Area = y1+y2
A=40+10
A=50 * (40-10)
A = 150
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@& You've got parts of the process down, but you haven't got the right result for the area.*@
*#&!*#&!
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&#See any notes I might have inserted into your document, and before looking at the link below see if you can modify your solutions. If there are no notes, this does not mean that your solution is completely correct.
Then please compare your old and new 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. &#
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