A traffic accident detective measures the skid marks left by a car, 825kg. He determines that the distance between the point that the driver slammed on the brakes and the point where the car came to a stop was 34.0 m. From a reference manual he determines that the coefficient of kinetic friction between the tires and the road under the prevailing conditions was 0.300. How fast was the car going when the driver applied the brakes? (This car was not equipped with anti-lock brakes.

Question

pawanyadav · Answer

You remember work energy theorem
Change in kinetic energy=total work done