Phy231
Your 'cq_1_02.1' 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 starts with velocity 4 cm/sec and ends with a velocity of 10 cm/sec.
What is your best guess about the ball's average velocity?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
10cm/sec - 4cm/sec= 6cm/sec
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Without further information, why is this just a guess?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
This is about as far as I can go with trying to figure out the average velocity because I don't know how far the ball rolled at these speeds.
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If it takes 3 seconds to get from the first velocity to the second, then what is your best guess about how far it traveled during that time?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
6cm/sec / 3sec= 2cm This is my guess how far it traveled during the 3 seconds.
This isn't a reasonable estimate; the ball travels at least 4 cm every second for 3 seconds so it travels a lot further than 2 cm.
Also you units don't work out.
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At what average rate did its velocity change with respect to clock time during this interval?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
2cm/3sec= .67cm/sec
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2/10/10 6pm
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Solution
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