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PHY 121
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A ball accelerates uniformly as it rolls 20 cm down a ramp, starting from rest, in 2 seconds.
• What are its average velocity, final velocity and acceleration?
answer/question/discussion: ->->->->->->->->->->->-> :
The average velocity is 5 cm/s. The final velocity is 10 cm/s. The acceleration is 2.5 cm/s^2
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• If the time interval is in error so that it is 3% longer than the actual time interval, then what are the actual values of the final velocity and acceleration?
answer/question/discussion: ->->->->->->->->->->->-> :
The actual values would be 2.06 seconds. The average velocity would be 4.58 cm/s . The final velocity is 9.7 cm/s. The acceleration would be 2.22 cm/s^2
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• What is the percent error in each?
answer/question/discussion: ->->->->->->->->->->->-> :
I am not confident on how to find percent error.
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• If the percent error is the same for both velocity and acceleration, explain why this must be so.
answer/question/discussion: ->->->->->->->->->->->-> :
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• If the percent errors are different explain why it must be so.
answer/question/discussion: ->->->->->->->->->->->-> :
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*#&!
@& You aren't getting correct results, and in order to help I need to see how you reasoned your results out. I suspect you are doing most of your reasoning correctly, but you are getting off track as some point.
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