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?
The clock time is 9 seconds.
• What is the velocity at the midpoint of this interval?
The velocity is 28cm/s.
• How far do you think the object travels during this interval?
Using the formula for change in velocity/change in seconds, and adding the change in cm/s each time the object would have traveled 212cm.
• By how much does the clock time change during this interval?
The clock time changes 8 seconds during this interval.
• By how much does velocity change during this interval?
The velocity changes by 24cm/s during this interval.
• What is the average rate of change of velocity with respect to clock time on this interval?
The average rate of change of velocity is 3cm/s.
• What is the rise of the graph between these points?
The rise would be 24cm/s.
• What is the run of the graph between these points?
The run would be 8 seconds.
• What is the slope of the graph between these points?
The slope would be 24/8 or 3/1.
`er11
• What does the slope of the graph tell you about the motion of the object during this interval?
The slope of the graph tells you that the object is accelerating.
• What is the average rate of change of the object's velocity with respect to clock time during this interval?
The average rate of change of velocity is 3cm/s.
** **
I spent approximately 10 minutes on this question.
** **
&#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. &#