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According to the Law of Conservation of Energy, why does the first hill on a roller coaster always have to be the tallest of all the other hills?
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According to the Law of Conservation of Energy, why does the first hill on a roller coaster always have to be the tallest of all the other hills?

User Michael Pilat
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Because it generates enough momentum to keep the train going with out really having to speed up
User GoPro
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