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PHY 121
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.
** CQ_1_05.1_labelMessages **
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: ->->->->->->->->->->->-> :
If it is accelerating at 8 cm/s^2 for 3 seconds, you multiply 8 cm/s^2 * 3 s and get 24
cm/s for these 3 seconds. Then you have to add the 24 c/s to the initial velocity of 12
c/s for a final velocity during this time of 36 cm/s.
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Assuming that acceleration is constant, what will be its average velocity during this
interval?
answer/question/discussion: ->->->->->->->->->->->-> :
To find the average velocity, you have to average the initial and final velocities,
which would be (12 cm/s + 36 cm/s)/2 = 48 cm/s / 2 = 24 cm/s
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How far will it travel during this interval?
answer/question/discussion: ->->->->->->->->->->->-> :
The average veolcity is 24 cm/s times the elapsed time of 3 seconds for a total of 72
cm.
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&#Very good responses. Let me know if you have questions. &#