#$&*
Phy 201
Your 'cq_1_02.2' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
** **
The problem:
A graph is constructed representing velocity vs. clock time for the interval between clock times t = 5 seconds and t = 13 seconds. The graph consists of a straight line from the point (5 sec, 16 cm/s) to the point (13 sec, 40 cm/s).
*
What is the clock time at the midpoint of this interval?
answer/question/discussion: ->->->->->->->->->->->-> scussion (start in the next line):
The midpoint would be 9 seconds.
#$&*
*
What is the velocity at the midpoint of this interval?
answer/question/discussion: ->->->->->->->->->->->-> scussion (start in the next line):
The velocity of the midpoint would be 28 cm/s.
The velocity at the midpoint would be 28 cm/s. It's not the midpoint that's moving.
#$&*
*
How far do you think the object travels during this interval?
answer/question/discussion: ->->->->->->->->->->->-> scussion (start in the next line):
I would estimate this object travels approx 350 cm.
you have to support your result
#$&*
*
By how much does the clock time change during this interval?
answer/question/discussion: ->->->->->->->->->->->-> scussion (start in the next line):
The clock time changes 8 seconds during this interval.
#$&*
*
By how much does velocity change during this interval?
answer/question/discussion: ->->->->->->->->->->->-> scussion (start in the next line):
The velocity changes 24cm/s during this interval.
#$&*
*
What is the average rate of change of velocity with respect to clock time on this interval?
answer/question/discussion: ->->->->->->->->->->->-> scussion (start in the next line):
I would say the average rate of change of velocity is 8 seconds.
that's change in clock time, not the requested ave rate of change
#$&*
*
What is the rise of the graph between these points?
answer/question/discussion: ->->->->->->->->->->->-> scussion (start in the next line):
The rise of the graph is 24 cm/s.
#$&*
*
What is the run of the graph between these points?
answer/question/discussion: ->->->->->->->->->->->-> scussion (start in the next line):
The run is 8 seconds.
#$&*
*
What is the slope of the graph between these points?
answer/question/discussion: ->->->->->->->->->->->-> scussion (start in the next line):
The slope is 3.
slope has units
#$&*
*
What does the slope of the graph tell you about the motion of the object during this interval?
answer/question/discussion: ->->->->->->->->->->->-> scussion (start in the next line):
The slope gives you the rate of change of the object.
right idea but needs to be more specific in naming the quantity
#$&*
*
What is the average rate of change of the object's velocity with respect to clock time during this interval?
answer/question/discussion: ->->->->->->->->->->->-> scussion (start in the next line):
3 cm/s
right number, wrong units
#$&*
** **
10 minutes
** **
Not bad, but you should submit a revision. You've got most of the right ideas but need to be a little more precise in detail.
&#See any notes I might have inserted into your document. If there are no notes, this does not mean that your solution is completely correct.
Then please compare your solutions with the expanded discussion at the link
Solution
Self-critique your solutions, if this is necessary, according to the usual criteria. Insert any revisions, questions, etc. into a copy of this posted document. Mark any insertions with &&&& so they can be easily identified.If your solution is completely consistent with the given solution, you need do nothing further with this problem. &#