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A4. A roller coaster of mass 5,750 kg begins it run from a height above the ground of 10 m and an initial velocity

A4. A roller coaster of mass 5,750 kg begins it run from a height above the ground of 10 m and an initial velocity of 8 m/s. Assume there is no friction in the system. a) Calculate the initial total energy in the system. b) Determine the velocity of the coaster when it moves to ground level.

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