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phy 121
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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: ->->->->->->->->->->->-> :
The change in velocity is (10m / 8 sec) or 1.25m/s - (10m/ 5sec) or 2m/sec = 0.75 m/s which if divided by the change in time of 3 seconds, gives us our average acceleration of 0.25m/s/s
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About 5 minutes
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The change in velocity on run down the ramp doesn't depend on what happened in another run down a ramp with a different slope.
Look at the question closely and apply the definition of rate of change carefully. What you need to do to answer this question is not what you expect to do based on the things you've been doing so far.
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