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PHY 201
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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SEED QUESTION 5.0(1_05.1)
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: ->->->->->->->->->->->-> :
vf = v0 + a * dt
vf = 12 cm/s + (8 cm/s^2 * 3s)
vf = 12 cm/s + 24 cm/s
vf = 36 cm/s
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• Assuming that acceleration is constant, what will be its average velocity during this interval?
answer/question/discussion: ->->->->->->->->->->->-> :
vAve = (vf + v0) / 2
vAve = (36 cm/s + 12 cm/s) / 2
vAve = 48 cm/s / 2
vAve = 24 cm/s
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• How far will it travel during this interval?
answer/question/discussion: ->->->->->->->->->->->-> :
ds = (v0 + vf) / 2 * dt
ds = (12 cm/s + 36 cm/s) / 2 * 3 s
ds = 48 cm/s / 6 s
ds = 8 cm
@& A ball that moves 24 cm every second will move more than 8 cm in 3 seconds.*@
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45 mins
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SEED QUESTION 5.0(1_05.1) submitted 5 Feb 11 around 5:36 PM.
@& Very good, though you did miss the last question.
See my note and see if you can correct that one.
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