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A cannon tilted up at a 30^\circ angle fires a cannon ball at 73 m/s from atop a 10 m-high fortress wall. What is the ball's impact speed on the

A cannon tilted up at a 30^circ angle fires a cannon ball at 73 m/s from atop a 10 m-high fortress wall. What is the ball's impact speed on the ground below?

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