Question: As observed from a ship moving due east at 6 mi/h, the wind appears to blow from the south. After the ship has changed course

As observed from a ship moving due east at 6 mi/h, the wind appears to blow from the south. After the ship has changed course and speed, and as it is moving due north at 4 mi/h, the wind appears to blow from the southwest. Assuming that the wind velocity is constant during the period of observation, determine the magnitude and direction of the true wind velocity.

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