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physics

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An object glides on a horizontal tabletop with a coefficient of kinetic friction of 0.55. If its initial velocity is 4.1 m/s, how long does it take for the object to come to rest?

  • physics - ,

    F = m a

    -.55 * m * g = m * a

    a = -.55 g = -5.39

    v = Vi + a t
    0 = 4.1 -5.39 t

    t = 4.1/5.39

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