The 3700-lb van is driven from position A to position B on the barge, which is towed at a constant speed vo = 9 mi/hr. The van starts from rest relative to the barge at A, accelerates to v = 20 mi/hr relative to the barge over a distance of d = 67 ft, and then stops with a deceleration of the same magnitude. Determine the magnitude of the horizontal force F between the tires of the van and the barge during this maneuver. VO d d B Answer: F = i lb