PHY 121
Your 'cq_1_05.1' 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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The problem:
A ball accelerates at 8 cm/s^2 for 3 seconds, starting with velocity 12 cm/s.
• What will be its velocity after the 3 seconds has elapsed?
answer/question/discussion: Velocity=distance/time
X=8cm/3seconds
There is no quantity in this problem related to a distance of 8 cm.
X= 2.7
Then I added this velocity to the original velocity of 12 cm/s and got 14.7cm/s
• Assuming that acceleration is constant, what will be its average velocity during this interval?
answer/question/discussion: 12+ 14.7+ 17.4+ 20.1+ 22.8+ 25.5=112.5/6= 18.75*
• How far will it travel during this interval?
answer/question/discussion: 112.5 cm/s
The question 'how far' is not answered by a quantity with units of cm / s.
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40 minutes
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You did a lot of things right here, but you also had some errors in identifying your quantities.
&#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. &#