Phy 201
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.
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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: ->->->->->->->->->->->-> : 30 cm / 5 sec = 6 cm/sec
• 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: ->->->->->->->->->->->-> : 6 cm/sec * 2 = 12 cm/sec
good answers so far, and you have indicated how you got them.
• By how much did its velocity therefore change?
this isn't correct and you didn't indicate how you got this
answer/question/discussion: ->->->->->->->->->->->-> : Changed by 6 cm/sec
• At what average rate did its velocity change with respect to clock time?
answer/question/discussion: ->->->->->->->->->->->-> : It changed 6 cm/sec every 5 seconds
• What would a graph of its velocity vs. clock time look like? Give the best description you can.
answer/question/discussion: ->->->->->->->->->->->-> : The graph would look like a straight line
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15 minutes
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Most of your answers are good and well documented; however you've made at least one error, which affects more than one of these results.
&#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. &#