question form

IC: 201

Your 'question form' 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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I am on the question What is the slope of the ramp when the domino is lying on its side? I put 2.5 over 30 and divided and got 0.083 for the answer.

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I understand that A quantity is 2.5 and B quantity is 30. I think the change in A quantity is 2.5 and the B quantity is 30. That will make the slop or average rate of change 0.083. Am I correct?

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I am working on the question What is the slope of the ramp when the domino is lying on its side?

What you have done is entirely correct, both in your concept and in your application of the concept.

question form

IC: 201

Your 'question form' 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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I am on the question What is the average rate of change of landing position with respect to the ramp slope between the first and second slope? I subtracted the first and second quantities for A quantity and got 11. I then subtracted the first and second quantities for B quantity and got 0.05. Then I divided the two quanitites and got the answer 220. Is this correct?

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I understand how to do the average rate of change. I'm not quite sure if I have the data right or the concept of how to do it right. I think I have to subtract the data between the two trials to come out with the right numbers. I am not sure I have the right data.

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I got 220 for this answer. Is it right?

This appears to be correct. The only thing missing is the units of your A quantity.

Your A quantity should be landing position, and I suspect the units of your change in A might be centimeters. However I didn't let you use a meter stick to measure this, so you might well have used some other measure of landing position. Somewhere in your answers to the questions you would ideally mention how the landing positions were observed and measured.

Your B quantity is ramp slope, which is found by dividing rise by run. Provided rise and run are both measured in the same units, dividing one by the other eliminates the units and the slope is a unitless quantity.

So assuming your landing position is in centimeters, your rate of change would be 11 cm / .05 = 220 cm. To clarify the meaning you might choose to express this as 11 cm / (.05 units of ramp slope) = 220 cm / unit of ramp slope, though it is not necessary to do so.