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krypton

A roller coaster at an amusement park has a dip that bottoms out in a vertical circle of radius r. A passenger feels the seat of the car pushing upward on her with a force equal to twice her weight as she goes through the dip. If r = 18.5 m, how fast is the roller coaster traveling at the bottom of the dip? A roller coaster at an amusement park has a dip that bottoms out in a vertical circle of radius r. A passenger feels the seat of the car pushing upward on her with a force equal to twice her weight as she goes through the dip. If r = 18.5 m, how fast is the roller coaster traveling at the bottom of the dip? @Mathematics

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