The barge weighs 45 000 lb and supports two automobiles A and B which weigh 4000 lb and 3000 lb, respectively, if the automobiles start from rest and drive towards each other, accelerating at BA = 4 ft/s2 and an = 8 ft/s2 until they reach a constant speed of 6 ft/s relative to the barge, determine the speed of the barge just before the automobiles collide. How much time does this take? Originally the barge is at rest. Neglect water resistance. |

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