cq_1_072

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PHY 231

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An automobile rolls 10 meters down a constant incline with slope .05 in 8 seconds, starting from rest. The same automobile requires 5 seconds to roll the same distance down an incline with slope .10, again starting from rest.

At what average rate is the automobile's acceleration changing with respect to the slope of the incline?

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

10m/8s=1.25 m/s

10m/5s=2 m/s

(2 m/s-1.25 m/s)/(0.10-0.05)=15 m/s per 1 slope change

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@& You've correctly calculated the aveage rate at which the ball's average velocity changes with respect to the slope.

However you need to begin by calculating the average accelerations.

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