Physics

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A car is being driven along a country road on a dark and rainy night at a speed of 20 m/s. The section of road is horizontal and straight. The driver sees that a tree has fallen and covered the road ahead. Panicking, the driver locks the breaks at a distance of 20m from the tree. If the coefficient of friction between the wheels and road is 0.8, at what speed does the car crash into the tree?

  • Physics -

    (Friction force)*(braking distance) = K.E. reduction

    Solve for the final kinetic energy and get the final V from that.

  • Physics -

    post it.

  • Physics -

    dfdf

  • Physics -

    a car with mass mass of 1875 is traveling along a countr

  • Physics -

    a car with mass mass of 1875 is traveling along a countr

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