In the braking test of a sports car its velocity is

Chapter 12, Problem 12.122

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In the braking test of a sports car its velocity is reduced from 70  mi/h to zero in a distance of 170 ft with slipping impending. Knowing that the coefficient of kinetic friction is 80 percent of the coefficient of static friction, determine (a) the coefficient of static friction, (b) the stopping distance for the same initial velocity if the car skids. Ignore air resistance and rolling resistance.

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