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Q1. A diver springs upward from a board that is 3.14 meters above water. At the instant she contacts the water her speed is 9.40 m/s and her body makes an angle of 71.30° with respect to the horizontal surface of the water. Find out her initial velocity?

Q2. At what angle have to the laser beam in the diagram be aimed at mirrored ceiling in order to hit the midpoint of the far wall? The length of the room is a=4.9 m and its height is b=3.00 m.

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