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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.
** 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: ->->->->->->->->->->->-> :
a = 8 cm/s^2
'dt = 3 seconds
v_0 = 12 cm/s
a = 'dv/'dt
a * 'dt = vf - v0
vf = a* 'dt + v0
= 8 cm/s^2 * 3 seconds + 12 cm/s
= 36 cm/s
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Assuming that acceleration is constant, what will be its average velocity during this interval?
answer/question/discussion: ->->->->->->->->->->->-> :
v_avg = (vf + v0) / 2
= (12 cm/s + 36 cm/s) / 2
= 24 cm/s
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How far will it travel during this interval?
answer/question/discussion: ->->->->->->->->->->->-> :
v_avg = 'ds/'dt
'ds = v_avg *'dt
= 24 cm/s * 3 s
= 72 cm
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&#Your work looks very good. Let me know if you have any questions. &#