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The propellers of a WWII destroyer produced a thrust of 2.65 MN to drive the ship at a top speed of 17 m/s. If the engines were suddenly thrown into reverse, developing one-half the thrust they produced driving ahead, for how many seconds would the ship travel before being brought to a stop, neglecting the drag force of the water? The mass of the ship is 2 x 10^6 kg.

Assume the drag force from the water is linearly proportional to speed. Now what is the time required to bring the ship to a stop?

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