#$&*
Phy 121
Your 'cq_1_03.1' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
** **
The problem:
A ball starts with velocity 0 and accelerates uniformly down a ramp of length 30 cm, covering the distance in 5 seconds.
What is its average velocity?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
30 / 5 = 6
#$&*
If the acceleration of the ball is uniform then its average velocity is equal to the average of its initial and final
velocities.
You know its average velocity, and you know the initial velocity is zero.
What therefore must be the final velocity?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
If the average velocity is equal to the average of its initial and final velocites and the initial velocity is zero then therfore the final velocity is zero.
this doesn't follow, but you have done a good job of stating your reasoning clearly
#$&*
By how much did its velocity therefore change?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
The velocity had no change if its zero.
#$&*
At what average rate did its velocity change with respect to clock time?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
With respect to clock time it was 30/5=6
#$&*
What would a graph of its velocity vs. clock time look like? Give the best description you can.
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
Would show an increase of speed. A straight line upwards.
#$&*
--------------------------------------------------------------------------------
Copy and paste your work into the box below and submit as indicated:
** **
30 minutes
** **
I am finding some of these questions to be very confusing so you may find some answers that make no sense what so ever.
You have some error, which you need to correct, but you are making sense.
&#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. &#