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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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: ->->->->->->->->->->->-> : average velocity= 30cm/5-0= 6cm/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: ->->->->->->->->->->->-> :2(6)= 12cm/sec
• By how much did its velocity therefore change?
answer/question/discussion: ->->->->->->->->->->->-> : 30-12/4= 7cm/sec
you need to use the appropriate units with every quantity; the number 30 does not correspond to a velocity but to a displacement
At what average rate did its velocity change with respect to clock time?
answer/question/discussion: ->->->->->->->->->->->-> : 30-12/4= 7cm/sec
I need to work more in this area. I need to memorize the equations a little better. I guess that I do not have a great understanding yet. I know my answers are not all right. I will work extra problems.
• What would a graph of its velocity vs. clock time look like? Give the best description you can.
answer/question/discussion: ->->->->->->->->->->->-> :
The graph would climb about 7 cm per second. It would have a rather steep slope and be in a straight line.
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30 minutes
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you've got most of the ideas but you're making some mistakes in identifying your quantities; with a little more practice I think you'll get this fine
you should submit a revision
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Solution
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