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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.
** 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).
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
The graph x axis is t and the y axis is v in cm/s. The point(4,10) is in the lower left hand corner. The point (9,40) is in the upper right hand corner.
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Sketch a straight line segment between these points.
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
Sketched straight line. It is increasing at a constant rate.
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What are the rise, run and slope of this segment?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
The rise is 40-10=30
The run is 9-4=5
The slope=rise/run=30/5=6
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These quantities all have units, which should be included. It's difficult to keep track of meanings without 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 under the segment isds or the change in position.
For this graph ave hi *width=15cm/s*5s=75cm.
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&#Good responses. See my notes and let me know if you have questions. &#