Car A is traveling at the constant speed of 68 km/h as it rounds the circular curve of radius r = 355 m and at the instant represented is at the position = 48°. Car B is traveling at the constant speed of 93 km/h and passes the center of the circle at this same instant. Car A is located with respect to car B by polar coordinates r and with the pole moving with B. For this instant determine VA/B and the values of r and 0 as measured by an observer in car B.

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Friction

Friction is defined as the force that prevents any solid surface, any layer of fluid, or any kind of element or material from sliding.