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Phy 121
Your 'question form' 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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Velocity vs. Clock time
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I am working on some problems and they are asking about the area 'beneath' the graph. I'm not really sure what is being referred to by that. In my notes, it says the area of a region beneath the graph represents the change in position, and the width of the region below the graph represents change in clock time.
Can you explain what these mean and how and why they represent the things they do?
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I recommend the Class Notes document for Class Notes #3.
The version posted online is at
http://vhcc2.vhcc.edu/ph1fall9/lectures/ph_980824_980911/980828/class%20notes.htm
The version with the video notes is on your first DVD.
Briefly, the region beneath a straight-line graph corresponding to an interval of the t axis of the horizontal axis forms a trapezoid. The width is the length of that interval and corresponds to the time interval. The 'graph altitudes' of a v vs. t graph represent velocities. The average 'graph altitude' therefore represents the average velocity.
This makes much more sense if you can see the graphs along with the explanation, which is why I'm referring you to the webpage.
After you have a chance to study and/or view the notes and compare what you see to my brief statement above, you might still have questions, which I'll be glad to answer.
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