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Phy 241
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):
I have a graph with the 2 points.
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• Sketch a straight line segment between these points.
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
I have a straight line an increasing slope.
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The slope of a straight line remains constant, it doesn't increase.
You would describe this as a straight line which is increasing at a constant rate, or simply as an increasing straight line.
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• What are the rise, run and slope of this segment?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
rise: 30cm/s run: 5s slope: 3.3cm/s/s
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The rise and run appear to be correct, but the slope is not (though you have the correct units for the slope). I can't tell how you got your result for the slope.
You should briefly indicate how you used the rise and the run to calculate the slope.
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• What is the area of the graph beneath this segment?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
vAve = (40cm/s + 10cm/s) / 2 = 25cm/s
Area = 25cm/s*5s = 125cm
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This is correct, and I can tell see how you reasoned it out.
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*#&!
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One of your results is not correct. Otherwise good.
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