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Unite! -ENERGY A 130 kg ball is sliding along a homemade roller coaster at a height of 90 cm and with a speed of 0.35

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Unite! -ENERGY A 130 kg ball is sliding along a homemade roller coaster at a height of 90 cm and with a speed of 0.35 m/s. PLEASE sketch a simple diagram. a) Calculate its kinetic energy and gravitational potential energy at 90 cm b) With what maximum speed could it reach the ground? c) [fthe roller coaster is 700% efficient, what would the actual speed be at the bottom

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