cq_1_021

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phy 201

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.

** CQ_1_02.1_labelMessages.txt **

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):

4cm/sec+ 10cm/sec = (14cm/sec)/ 2 = 7cm/sec

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• Without further information, why is this just a guess?

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

You are not able to measure how fast the ball speeds up throughout the time period.

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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):

7cm/sec= displacement/3 seconds = 21cm

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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):

6cm/3sec= 2cm/sec

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*#&!

&#Very good responses. Let me know if you have questions. &#