Phy 201
Your 'cq_1_02.1' 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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A ball starts with velocity 4 cm/sec and ends with a velocity of 10 cm/sec.
What is your best guess about the ball's average velocity?
I think the ball's average velocity would be 7 cm/sec. I believe this because when finding average of mostly anything you add the numbers together and then divide by the total numbers in the problem which is what I did.
Without further information, why is this just a guess?
This is just a guess because there could be more factors in determining the correct average and most equations to put into play.
If it takes 3 seconds to get from the first velocity to the second, then what is your best guess about how far it traveled during that time?
I'm going to go with 21 cm because from 4 - 10 there are a total of 7 numbers and if you multiply 7 by 3 you receive 21. Just a guess?
At what average rate did its velocity change with respect to clock time during this interval?
I'm not very sure how I could answer this question without knowing how far the ball actually rolled.
The ball's displacement is not relevant to this question. You need to use the definition of rate of change.
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30 minutes
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you reasoned out the first two questions well; you didn't get the third one. See my note.
&#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. &#