cq_1_041

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Phy 201

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.

** CQ_1_04.1_labelMessages **

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):

(40-10)/(9-4)

30/5

6

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What is the area of the graph beneath this segment?

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

Area = (1/2)(5* (10+40)/2)

Area = (1/2)(5*25)

Area = (1/2)(125)

Area = 62.5

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Your numerical calculations are correct, but you need to include units throughout your analysis.

Can you resubmit showing the steps

(40-10)/(9-4)

30/5

6

with the proper units on each quantity?

Can you do the same for the expressions

Area = (1/2)(5* (10+40)/2)

Area = (1/2)(5*25)

Area = (1/2)(125)

Area = 62.5

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