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A 1720-kg car is traveling with a speed of 15.0 m/s. What is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 47.0 m?

  • physics -

    v = 15-at
    v=0 when t = 15/a

    47 = 1/2 at^2
    so, a = -225/94

    F = ma

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