Science

posted by Dineo

A soccer star is travelling with a car of a mass of 880kg on a horizontal road at a velocity of 30m/s. He immediately applies the brakes so as to stop 50m away. The resistance to motion on the horizontal road is 295N. Calculate the deceleration of the car and the braking force

  1. Henry

    V^2 = Vo^2 + 2a*d.
    0 = 30^2 + 2a*50,
    a = -9 m/s^2.

    -F-Fk = M*a.
    -F-295 = 880*(-9),
    F = ?.

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