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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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:
7 cm/s because that is the average of the two points.
Without further information, why is this just a guess?
answer/question/discussion:
The average of the two points is an estimate or guess because not enough information is given to calculate the actual average velocity.
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:
21cm because 7cm/s * 3 sec=21cm.
At what average rate did its velocity change with respect to clock time during this interval?
answer/question/discussion:
2cm/s/s because 10-4=6, 6/3=2
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25 minutes
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&#Very good work. Let me know if you have questions. &#