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: ->->->->->->->->->->->-> :
v0, vf, and ds are given
dt=45cm/10m/s=4.5s
a=10cm/s/4.5s=2.22m/s^2
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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: ->->->->->->->->->->->-> :
a, dt, and vf are given.
10cm/s^2=(50cm/s-v0)/3
V0=20cm/s
Ds=30cm/s*3s=90cm
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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, v0, and a are given.
I dont know how to solve this. I feel like I need more information, either time of vf.
This one requires the fourth equation of uniformly acceleration motion, vf^2 = v0^2 + 2 a `ds.
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Then for each situation answer the following:
Is it possible from this information to directly determine vAve?
answer/question/discussion: ->->->->->->->->->->->-> : Yes.
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Is it possible to directly determine `dv?
answer/question/discussion: ->->->->->->->->->->->-> :
Yes
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15mins.
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&#Very good work. Let me know if you have questions. &#