A quarterback throws a pass that is a perfect spiral. In otherwords, the football does not wobble, but spins smoothly about anaxis passing through each end of the ball. Suppose the ball spinsat 7.65 rev/s. In addition, the ball is thrown with a linear speedof 16.0 m/s at an angle of 59.2° with respect to the ground. Ifthe ball is caught at the same height at which it left thequarterback's hand, how many revolutions has the ball made while inthe air?

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