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Two swimmers A and B, of weight 190 lb and 125 lb, respectively, are standing still at opposite ends of a 300 lb floating raft. If swimmer A starts moving toward the center of the raft at a speed of 2 ft/s relative to the raft while B moves to the right toward the end of the raft at 3 ft/s relative to the raft, what is the speed of the raft? Vc = −1.228

Two swimmers A and B, of weight 190 lb and 125 lb, respectively, are standing still at opposite ends of a 300 lb floating raft. If swimmer A starts moving toward the center of the raft at a speed of 2 ft/s relative to the raft while B moves to the right toward the end of the raft at 3 ft/s relative to the raft, what is the speed of the raft? Vc = −1.228

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15-B20 Two swimmers A and B , of weight 190 l b and 125 l b , respectively, are standing still at opposite ends of a 300 l b floating raft. If swimmer A starts moving toward the center of the raft at a speed of 2 f t / s relative to the raft while B moves to the right toward the end of the raft at 3 f t / s relative to the raft, what is the speed of the raft?
V c = − 1.228

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