cq_1_041

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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).

Sketch a straight line segment between these points.

What are the rise, run and slope of this segment?

answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):

Rise is 40-10=30 cm/s

Run is 9-4=5 seconds

Slope is 30/6 = 5

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Good reasoning but you do need the units.

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What is the area of the graph beneath this segment?

answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):

The area beneath the graph is 125 cm distance moved in 5 seconds.

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5 minutes

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Except for the missing units, very well done.

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