Phy231
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:
Ok.
• Sketch a straight line segment between these points.
answer/question/discussion:
Ok.
• What are the rise, run and slope of this segment?
answer/question/discussion:
rise=40-10=30
run=9-4=5
slope=30/5=6
• What is the area of the graph beneath this segment?
answer/question/discussion:
30*5/2=75
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5 minutes
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These quantities have units, which should be used throughout the calculation and in the final results.
The slope and the area both have interpretations which are easier to understand if you think about the units.