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phy121
Your 'cq_1_21.2' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
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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: ->->->->->->->->->->->-> :
If there was all the forces on the car, like air resistance, friction and gravity, then the automobile is moving slower. Therefore, less KE coming back down the incline.
If gravity was the only force, then the car speed would be the same because the amount of energy lost up the incline is gained by the same forces back down the incline.
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&#Very good responses. Let me know if you have questions. &#