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    A supertanker of mass 400000000 is streaming at a constant speed of 8m/s. The resistance force is 2000000N. One of the two engines fails but the other continues to work at the same rate. The resistance force is directly proportional to the speed of the ship. Find the eventual steady speed of the ship under one engine only, assuming that the single engine maintains constant power output?

    First work out the power that both engines are providing. Also work out what the resistive force at some arbitrary 'v', and how much force the single engine can provide at that same arbitrary 'v'. These will be equal in the eventual end state.
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