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Phy 121
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.
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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: ->->->->->->->->->->->-> :
The vo would be 10cm/s. The final velocity (vf) would be the 20cm/s. The displacement (ds) would be 45 cm.
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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: ->->->->->->->->->->->-> :
The acceleration (a) would be 10cm/s^2. The dt would be 3 seconfs. The final velocity (vf) would be 50cm/s.
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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: ->->->->->->->->->->->-> :
The acceleration (a) is 20cm/s^2. The displacement (ds) would be 30cm.
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@& 'From rest' implies v0 = 0 as well.*@
Then for each situation answer the following:
Is it possible from this information to directly determine vAve?
answer/question/discussion: ->->->->->->->->->->->-> :
Yes because all you need is the initial and final velocities.
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Is it possible to directly determine `dv?
answer/question/discussion: ->->->->->->->->->->->-> :
No because you would need the average acceleration and the dt. We have the dt but not the average acceleration.
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*#&!
&#This looks good. See my notes. Let me know if you have any questions. &#