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A hot air balloon rises from the ground with a velocity of (2.0 m/s)yhat. A champagne bottle is opened to celebrate takeoff, expelling the cork horizontally with a velocity of (4.4 m/s)xhat relative to the balloon. When opened, the bottle is 6.2 m above the ground. (Neglect air resistance.)

(a) What is the speed of the cork, and its initial direction of motion, as seen by the same observer?

(b) Determine the maximum height above the ground attained by the cork.

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