The boat of mass M is powered by a fan F which develops a slipstream having a diameter d. If the fan ejects air with a speed v, 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 ρ_a and that the entering air is essentially at rest. Neglect the drag resistance of the water.

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Given: 200 kg h = 0.375 m M = d = 0.75 m v = 14 m S Pa = 1.22 kg m