#$&*
phy 201
Your 'cq_1_02.1' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
** CQ_1_02.1_labelMessages.txt **
The problem:
A ball starts with velocity 4 cm/sec and ends with a velocity of 10 cm/sec.
What is your best guess about the ball's average velocity?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
7cm/s
#$&*
Without further information, why is this just a guess?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
No specific information is used to find it
#$&*
If it takes 3 seconds to get from the first velocity to the second, then what is your best guess about how far it traveled during that time?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
18 cm
#$&*
@&
You don't say how you got this. However I suspect you got it by multiplying the change in velocity by the time interval.
This would not be an appropriate calculation. Why not?
What would be a more appropriate calculation?
*@
At what average rate did its velocity change with respect to clock time during this interval?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
the velocity increased by 2 cm per second
#$&*
@&
2 cm / second is a velocity.
2 cm / second cannot be a rate at which velocity changes.
Your units are not correct. You haven't shown your calculation, which should be shown and should include units for all quantities at every step.
*@
*#&!*#&!
@&
You are doing a lot of things right, but you are also making some critical errors in both reasoning and detail.
&#Please see my notes and submit a copy of this document with revisions, comments and/or questions, and mark your insertions with &&&& (please mark each insertion at the beginning and at the end).
Be sure to include the entire document, including my notes. &#
*@