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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: ->->->->->->->->->->->-> :
Again like before we could say that the object starts with a velocity of 9.8m/s. In 1 sec it will move 9.8 meters, however this time the gravitational force parallel with the incline must be taken into account, since the full force of gravity isn’t being enacted on the car, just a portion of it. We couldn’t say that in 1 sec it will have attained a change in velocity of 9.8m/s and is back in one second at its initial velocity. The initial force on the car as well as the slope of the incline would be useful to know, it would be fairly simple for me to concoct a set of quantities that argued in favor of the car being slower, same or faster, but I could be overextending my reach here, and there is most likely only one proper answer.
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Solution
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