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A roller-coaster car has a total mass (including passengers) of 475kg. Sitting in the car is a passenger with a mass of 55.0 kg. Thecar reaches the lowest point of a circular arc in the track, pointA in the figure below, moving at a speed of 17.0 m/s. The radius ofthe arc is
r1 = 27.0 m.
A roller coaster on a track is shown. Two points labeled A and Bare given. The path of the roller coaster begins from the top ofhill, down a steep incline to point A which is shown as the