# physics

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A barge with mass 1.0×105 kg is proceeding down river at 5.8 m/s in heavy fog when it collides broadside with a barge heading directly across the river (see the figure). The second barge has mass 2.58×105 kg and was moving at 4.2 m/s. Immediately after impact, the second barge finds its course deflected by 18° in the downriver direction and its speed increased to 5.0 m/s. The river current was practically zero at the time of the accident. What are the speed and direction of motion of the first barge immediately after the collision? Speed?

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