#$&*
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?
Quantity A is the position of the ball and Quantity B is the time. The average rate of change is 2cm/s.
(20-10)/(9-4)=(10/5)=2cm/s
• 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?
(40cm-10cm)/(3 sec)=(30cm)/(3 sec)=10cm/s
• 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?
(5cm per second)*(10 seconds)=50 cm
• 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.
The numerator of your fraction is always going to be the position or distance and the denominator is always going to be the times.
• 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.
You will us these procedures if you are trying to find the average rate of change given distances and times for the beginning and end of the interval.
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20 minutes
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I know the orientation is setup to show me how the course but the problem is I've been working on it for days and I'm still not done. More work just keeps on popping up and I don't have time to keep doing busy-work. Do I have to do ALL the orientation or can I just start doing the course work??? Also how much if any does the orientation count for in my grade???
@& You haven't yet submitted the q_a_rates questions. There are a lot of ideas there relevant to the 'seed' question you submitted just before this one, and you would have benefitted from incorporating those ideas.
The Orientation exercises shouldn't take you long. If they do it's because you need the review.
You should at the very least go through the exercises, work them in your head, and be sure you have done everything in the given solutions. If you do so, you can simply give me a statement at the end that you've been through the document and would have been able to answer everything.
You did fine on the problem here, incidentally, and on the Orientation exercises you have completed. This question would have been better asked by submitting the Question Form, so you would know where on your access page to find my response. (no problem on this end)*@