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Two banked curves on a highway have the same radius. Curve A is banked at 13 degrees and highway B is banked at 19 degrees. A car can travel around curve A without relying on friction at a speed of 18 m/s. At what speed can this car travel around curve B without relying on friction?

  • Physics - ,

    A roadway is designed for traffic moving at a speed of 68 m/s. A curved section of the roadway is a circular arc of 140 m radius. The roadway is banked--so that a vehicle can go around the curve--with the lateral friction forces equal to zero. The angle at which the roadway is banked is closest to:
    Select one:
    a. 73°
    b. 67°
    c. 75°
    d. 69°
    e. 71°

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