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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.
** CQ_1_05.1_labelMessages **
Samantha Rogers
PHY 201
Qa 05
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: ->->->->->->->->->->->-> :
aAve = `dv / `dt
8cm/sec^2 = `dv / 3 sec
`dv = 8cm/sec^2 * 3 sec
`dv = 24cm/sec
vf = v0 + `dv = 12cm/sec + 24cm/sec = 36cm/sec
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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 = ( 36cm/sec + 12cm/sec) / 2 = (48cm/sec) / 2 = 24cm/sec
vAve = 24 cm/sec
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• How far will it travel during this interval?
answer/question/discussion: ->->->->->->->->->->->-> :
vAve = `ds / `dt
vAve * `dt = `ds
(24cm/sec) * 3 sec = `ds
`ds = 72cm
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&#Your work looks very good. Let me know if you have any questions. &#