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 = 10cm/s
vf = 20cm/s
`ds = 45cm
• 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 = 10 cm/s^2
`dt = 3s
`vf = 50 cm/s
• A ball travels 30 cm along an incline, starting from rest, while accelerating at 20 cm/s^2.
answer/question/discussion: ->->->->->->->->->->->-> :
`vf = 30cm
`v0 = 0
A = 20 cm/s^2
Then for each situation answer the following:
• Is it possible from this information to directly determine vAve?
answer/question/discussion: ->->->->->->->->->->->-> :
question 1: yes, since you have the v0 & vf
question 2: no, since you only have the vf, it is unclear where it started at.
question 3: yes, since you have the v0 & vf
• Is it possible to directly determine `dv?
answer/question/discussion: ->->->->->->->->->->->-> :
question 1: yes, since you have v0 & vf
question 2: yes, since you have a & `dt
question 3: yes, since you have v0 & vf
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20 min.
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&#This looks very good. Let me know if you have any questions. &#