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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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:
• Sketch a straight line segment between these points.
->->->->->->->->->->->-> answer/question/discussion:
• What are the rise, run and slope of this segment?
->->->->->->->->->->->-> answer/question/discussion: The rise is 30, the run is 5, the slope is 6.
These quantities need units.
• What is the area of the graph beneath this segment?
->->->->->->->->->->->-> answer/question/discussion: A(trapezoid)=1/2B[H1+H2] A(trapezoid)=1/2x5[10+40] A=125
These quantities need units.
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15min.
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Good, but you didn't include units, which I know you could easily have done.
&#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. &#