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A body was moving with a velocity 60km/hour. It is brought to rest by applying a force of 200newton.Find the mass of body in5sec

  • science -

    I'm assuming the body is brought to rest in 5 sec.

    Vo = 60km/h = 60,000m/3600s. = 16.67 m/s.

    V = Vo + a*t.
    0 = 16.67 + a*5,
    a = -3.33 m/s^2.

    Fap = M*a.
    =200 = M*(-3.33),
    M = 60.0 kg.

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