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Phy 201
Your 'cq_1_01.1' 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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cq_1_011
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Phy 201
Your 'cq_1_01.1' 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:
Here is the definition of rate of change of one quantity with respect to another:
The average rate of change of A with respect to B on an interval is
average rate of change of A with respect to B = (change in A) / (change in B)
Apply the above definition of average rate of change of A with respect to B to each of the following. Be sure to identify the quantity A, the quantity B and the requested average rate.
If the position of a ball rolling along a track changes from 10 cm to 20 cm while the clock time changes from 4 seconds to 9 seconds, what is the average rate of change of its position with respect to
clock time during this interval?
answer/question/discussion: ->->->->->->->->->->->-> : ->->->->->->->->->->->-> (start in the next line):
A= change of the position of ball
B= Clock time changes
10cm/5s = 2cm/s
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If the velocity of a ball rolling along a track changes from 10 cm / second to 40 cm / second during an interval during which the clock time changes by 3 seconds, then what is the average rate of change
of its velocity with respect to clock time during this interval?
answer/question/discussion: ->->->->->->->->->->->-> : ->->->->->->->->->->->-> (start in the next line):
A= Change in &&&& Position &&&&
B= Clock time changes
30cm/3s = 10cm/s
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30 cm would be a distance or a displacement.
No distance or displacement is given in this problem. So there is no quantity equal to 30 cm.
What therefore should be the units of your numerator, and what should be the units of your final result?
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30 cm would be a position or a displacement. It would not be a change in clock time.
Can you correct the units in your calculation? &&&& I realize my mistake here, just overlooked it &&&&
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If the average rate at which position changes with respect to clock time is 5 cm / second, and if the clock time changes by 10 seconds, by how much does the position change?
answer/question/discussion: ->->->->->->->->->->->-> : ->->->->->->->->->->->-> (start in the next line):
Average rate of change = 5cm/s
B = 10 seconds
5cm/s * 10s = 50cm
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You will be expected hereafter to know and apply, in a variety of contexts, the definition given in this question. You need to know this definition word for word. If you try to apply the definition
without using all the words it is going to cost you time and it will very likely diminish your performance. Briefly explain how you will ensure that you remember this definition.
answer/question/discussion: ->->->->->->->->->->->-> : ->->->->->->->->->->->-> (start in the next line):
This formula will b erecorded on my formula sheet for quick reference.
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You are asked in this exercise to apply the definition, and given a general procedure for doing so. Briefly outline the procedure for applying this definition, and briefly explain how you will remember
to apply this procedure.
answer/question/discussion: ->->->->->->->->->->->-> : ->->->->->->->->->->->-> (start in the next line):
the average rate of change in A with respect to B = change in A / change in B. The key is knowing the with respect to portion of the formula. I have recorde this on my formula sheet.
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Good, but one quick revision is needed.
&#Please see my notes and, unless my notes indicate that revision is optional, submit a copy of this document with revisions and/or questions, and mark your insertions with &&&& (please mark each insertion at the beginning and at the end).
Be sure to include the entire document, including my notes.
If my notes indicate that revision is optional, use your own judgement as to whether a revision will benefit you. &#
Two other notes:
You are giving your access code as 02-84-100. If is likely that the message containing your access code errouneously appended the 0 in front of the 100, so I don't think the fault is yours.
In any case your access code should be
02-84-100.
Can you use this correction in future submissions?
Final note: The spacing between lines in my postings to your access page will be significantly exaggerated. The reason is that your submissions contain HTML tags. It could be that you are opening these files in their text format, which will often include HTML tags. If you open the files in your browser, and simply highlight and copy them to a text editor, they should copy without the tags.
This doesn't make a big difference on my end, but as mentioned it will affect the readability of the files you see at your access site.
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