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PHY 201
Your 'cq_1_06.1' 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_06.1_labelMessages **
PHY 201
Seed 6.1
For each situation state which of the five quantities v0, vf, `ds, `dt and a are given, and give the value of each.
• A ball accelerates uniformly from 10 cm/s to 20 cm/s while traveling 45 cm.
answer/question/discussion: ->->->->->->->->->->->-> :
Given:
`ds = 45 cm
v0 = 10cm/sec
vf = 20cm/sec
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• A ball accelerates uniformly at 10 cm/s^2 for 3 seconds, and at the end of this interval is moving at 50 cm/s.
answer/question/discussion: ->->->->->->->->->->->-> :
Given:
aAve = 10cm/sec^2
vf = 50cm/sec
`dt = 3 sec
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• A ball travels 30 cm along an incline, starting from rest, while accelerating at 20 cm/s^2.
answer/question/discussion: ->->->->->->->->->->->-> :
`ds = 30 cm
v0 = 0cm/sec
aAve = 20cm/sec^2
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Then for each situation answer the following:
• Is it possible from this information to directly determine vAve?
answer/question/discussion: ->->->->->->->->->->->-> :
vAve = `ds / `dt
vAve = (vf + v0) / 2
First Situation: Yes, you can determine vAve by using the equation, vAve = (vf + v0) / 2
Second Situation: No, you can not determine vAve by the given information. In multiple steps though you could figure out all of the quantities.
Third Situation: No, you can not determine vAve by the gibbon information.
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• Is it possible to directly determine `dv?
answer/question/discussion: ->->->->->->->->->->->-> :
`dv = aAve * `dt
First Situation: Yes, you can directly determine `dv by using the quantities vf and v0.
Second Situation: Yes, you can directly determine `dv by using the quantities aAve and `dt.
Third Situation: No, you can not determine `dv by the given information.
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15 minutes
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6/5/2012 1:45
&#Very good responses. Let me know if you have questions. &#