cq_1_021

Phy 121

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: **************** that the ball sped up

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

answer/question/discussion: **************** because the velocity increased

• 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: **************** 18cm/sec

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

answer/question/discussion: **************** 3cm/sec

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10 minutes

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&#At least part of your solution does not agree with the solution and comments given at the link below. You should view the solution at that link and self-critique as indicated there.

Solution

This link also expands on these topics and alerts you to many of the common errors made by students in the first part of this course. &#