Phy 231
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):
20cm – 10cm= 10cm quantity A
9 sec- 4 sec=5 sec quantity B
10cm/5sec= 2cm/sec
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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):
40cm/sec – 10cm/sec= 30cm/sec=rate of change=quantity A
3 sec = quantity B
30cm/sec / 3 sec= 10cm so it traveling 10cm per second as the average rate of change
Your units are incorrect.
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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):
5cm/sec * 10sec= 50cm is how much the position changes
I’m not sure what is A and what is B here? Its kind of like 5cm/sec= quantityA/ 10 seconds , so therefore 10 seconds is quantity B and the 5cm/sec is the solution
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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):
I will remember this definition through repetition and practice. A lot of physics will involve this definition and therefore I know that it is important.
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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):
avg rate of change of A with respect to B= change in A/ change in B
First you must decide what quantity A is and what is quantity B in the problem that is given to you. Once that has been decide you simply solve the problem.
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10 min
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2/1/10 4pm
Any errors you have made on this assignment appear to be easily corrected. See the link indicated below. See the link listed below. You may do so if you wish, but you don't need to submit a revision unless you're unsure if you understand.
&#Please compare your solutions with the expanded discussion at the link
Solution
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