A 2000-kg automobile starts from rest at point A on a 60
incline and coasts through a distance of
150 m to point B. The brakes are then applied, causing the automobile to come to a stop at point C,
20 m from B. Knowing that slipping is impending during the braking period and neglecting air
resistance and rolling resistance, determine (a) the speed of the automobile at point B, (b) the
coefficient of static friction between the tires and the road.
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