cq_1_021

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.

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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: The average velocity would be 7 cm/sec

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

->->->->->->->->->->->-> answer/question/discussion: Because we don’t know the amount of time the ball takes to get from the velocity of 4 to 10 cm/sec

• 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:

= 3 cm?

• At what average rate did its velocity change with respect to clock time during this interval?

->->->->->->->->->->->-> answer/question/discussion: (10-4) / 3

= 2 cm/sec

`er11

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5 min

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&#Please compare your solutions with the expanded discussion at the link

Solution

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