A frictionless roller coaster has three hills: 20 m, 8m, and 12m, in that order. If the roller coaster car starts from rest at the top of the highest hill, how fast will it be moving at the top of other hills
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A frictionless roller coaster has three hills: 20 m, 8m, and 12m, in that order. If the roller coaster car starts from rest at the top of the highest hill, how fast will it be moving at the top of other hills
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