cq_1_091

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PHY 201

Your 'cq_1_09.1' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.

** CQ_1_09.1_labelMessages **

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: ->->->->->->->->->->->-> :

final vel=20 cm/s

accel= 10cm/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: ->->->->->->->->->->->-> :

Final vel= 19.4 cm/s

Accel=9.4m/s

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•What is the percent error in each?

answer/question/discussion: ->->->->->->->->->->->-> :

percent error in velocity is 3 %

percent error in acceleration is 6%

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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: ->->->->->->->->->->->-> :

Velocity and acceleration do not change at the same rate?

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15 min

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&#Good responses. Let me know if you have questions. &#