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physics

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The mass of a roller-coaster car, including its passengers, is 481 kg. Its speed at the bottom of the track in the figure below is 20 m/s. The radius of this section of the track is r1 = 24 m. Find the force that a seat in the roller-coaster car exerts on a 54-kg passenger at the lowest point.

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    The mass of a roller-coaster car, including its passengers, is 481 kg. Its speed at the bottom of the track in the figure below is 17 m/s. The radius of this section of the track is r1 = 26 m. Find the force that a seat in the roller-coaster car exerts on a 45-kg passenger at the lowest point.

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