Multiple Choice Question: The pressure P of wind on a sail varies jointly as the area A of the sail and the square of the velocity V of the wind.

The pressure P of wind on a sail varies jointly as the area A of the sail and the square of the velocity V of the wind. The pressure on a square foot is 1 lb when the velocity is 16 mph. The velocity of the wind when the pressure on a square yard is 36 lbs is:

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The pressure P of wind on a sail varies jointly as the area A of the sail and the square of the velocity V of the wind.

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