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Physics-Rollercoaster Essay Preview: Physics-Rollercoaster Report this essay THE RUSSIAN MOUNTAINS The first “scream machines” were not out-of-control trains but sleds on man-made ice-covered hills constructed of cut lumber and tree trunks. Elaborate constructions often stretching several city blocks, the 50 mile-per-hour rides earned the nickname “Flying Mountains.” Children and adults would make the tedious trek.
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