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Phy 241
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: ->->->->->->->->->->->-> :
Since it accelerates at 8cm/s^2 for 3s its velocity would increase by 24cm/s meaning the final velocity would be 34cm/s
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• Assuming that acceleration is constant, what will be its average velocity during this interval?
answer/question/discussion: ->->->->->->->->->->->-> :
vAve = (34cm/s + 12cm) / 2 = 23cm/s
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• How far will it travel during this interval?
answer/question/discussion: ->->->->->->->->->->->-> :
`ds = vAve * `dt = 23cm/s * 3s = 69cm
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about 5 minutes
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Good. Your reasoning is completely correct.
Arithmetic note: 12 + 24 = 36, not 34.
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