Question: A 2000-kg automobile starts from rest at point A on a 6 o incline and coasts through a distance of 150 m to point B.

A 2000-kg automobile starts from rest at point A on a 6^oincline and coasts through a distance of 150 m to point B. The brakes are then fully applied, causing the automobile to skid to a stop at point C, 20 m from B. Knowing that the coefficient of dynamic friction between the tires and the road is 0.75, determine the work done on the automobile by the combined effects of air resistance and rolling resistance between points A and C.

150 m. B 20 m

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