cq_1_051

Phy231

Your 'cq_1_05.1' 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 accelerates at 8 cm/s^2 for 3 seconds, starting with velocity 12 cm/s.

• What will be its velocity after the 3 seconds has elapsed?

answer/question/discussion: ->->->->->->->->->->->-> :

8cm/s^2 * 3sec=24cm/s/s +12cm/sec= 36cm/sec

#$&*

• Assuming that acceleration is constant, what will be its average velocity during this interval?

answer/question/discussion: ->->->->->->->->->->->-> :

36cm/s +12cm/sec=48cm/sec 48cm/sec/2= 24cm/sec

#$&*

• How far will it travel during this interval?

answer/question/discussion: ->->->->->->->->->->->-> :

24cm/sec *3sec= 72cm

#$&*

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10 min

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2/21/10 10:30am

&#Your work looks very good. Let me know if you have any questions. &#