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 down a ramp of length 30 cm, covering the distance in 5 seconds.
• What is its average velocity?
answer/question/discussion: The average velocity is 6cm/second.
• If the acceleration of the ball is uniform then its average velocity is equal to the average of its initial and final velocities.
answer/question/discussion:
• You know its average velocity, and you know the initial velocity is zero. What therefore must be the final velocity? 12cm/c
answer/question/discussion:
• By how much did its velocity therefore change? 12cm/s
answer/question/discussion:
At what average rate did its velocity change with respect to clock time?
answer/question/discussion: 2.4cm/s per second
What would a graph of its velocity vs. clock time look like? Give the best description you can.
answer/question/discussion: Well the further that we move from 0 seconds to five seconds the more extreme that the graph increases with length. The curve increases at an increasing rate.
Uniform acceleration, which is a stated condition here, is equivalent to a straight-line graph of velocity versus clock time. The graph would indeed be increasing as you say, but it would be increasing at a constant rate.
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20 minutes
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&#Your work looks good. See my notes. Let me know if you have any questions. &#