A sailboat weighing 100 kg begins to move under the influence of wind blowing at a speed v = 10 m/s. Calculate the time after which the power taken by the boat from the wind will be maximum if the force of resistance of the sail to the wind is proportional to the square of the relative speed between the boat and the wind with a proportionality coefficient k = 0.1 kg/m. Neglect the friction force.
Answer. Format gif
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