The 200-kg boat is powered by the fan which develops a slipstream having a diameter of 0.75 m. If the fan ejects air with a speed of 14 m/s, measured relative to the boat, determine the initial acceleration of the boat if it is initially at rest. Assume that air has a constant density of pa = 1.22 kg/m3 and that the entering air is essentially at rest. Neglect the drag resistance of the water.

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0.75 m