Phy 121
Your 'cq_1_6.1' 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= 10 cm/s
vf= 20 cm/s
‘ds= 45 cm
• 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 = 3 seconds
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: ‘ds= 30 cm
v0= 0 cm/s
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: For the first situation yes, but not directly for the other two.
• Is it possible to directly determine `dv?
answer/question/discussion: For the first situation yes, but not for the other two.
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About 30 minutes.
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Good. For a slightly different take on the meaning of 'direct reasoning', check out the link. No revision is necessary.
&#At least part of your solution does not agree with the solution and comments given at the link below. You should view the solution at that link and self-critique as indicated there.
Solution
This link also expands on these topics and alerts you to many of the common errors made by students in the first part of this course. &#