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: 10m/s, vf: 20m/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: ‘dt: 3 seconds, a: 10m/s^2, vf: 50cm/s
• A ball travels 30 cm along an incline, starting from rest, while accelerating at 20 cm/s^2.
answer/question/discussion: ‘ds: 30cm, a: 20cm/s^2, v0: 0
Then for each situation answer the following:
• Is it possible from this information to directly determine vAve?
answer/question/discussion: the first one-yes, the second one-no, the third one-no
• Is it possible to directly determine `dv?
answer/question/discussion: the first one-yes, the second one-no, the third one-yes
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15 minutes
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You didn't provide any explanation of your 'yes' and 'no' answers on the last couple of questions. You can ignore the request to submit a revision, but should take a good look at the solution provided in the link below.
&#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. &#