Phy 231
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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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: 30 cm/ 5 sec = average velocity 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.
answer/question/discussion: True
You know its average velocity, and you know the initial velocity is zero. What therefore must be the final velocity?
answer/question/discussion: 12 cm/sec
By how much did its velocity therefore change?
answer/question/discussion: It changed from 0 cm/sec to 12 cm/sec making a change of 12 cm/sec
At what average rate did its velocity change with respect to clock time?
answer/question/discussion: 2.4 cm/sec^2
What would a graph of its velocity vs. clock time look like? Give the best description you can.
answer/question/discussion: It would be a linear graph beginning at the origin with a slope of 2.4. It would have intervals 1 cm for the y-axis, and 1 sec for the x-axis.
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20 min
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&#This looks very good. Let me know if you have any questions. &#