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PHY 121
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A typical automobile coasts up a typically paved incline, stops, and coasts back down to the same position.
When it reaches this position, is it moving faster, slower or at the same speed as when it began? Explain
answer/question/discussion: ->->->->->->->->->->->-> :
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It is faster. It will go up the incline against friction and gravitational forces. Returning down the incline, gravity will force it along. There is less resistance in the downward motion which will allow the car to return to original position faster than it reached the top of the incline.
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3 minutes
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@& Once more you're doing a good job of thinking about the situation. However rolling friction works against the car in both directions.
Check the discussion and let me know if you have questions.
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Solution
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