What is the magnitude of the balls initial velocity

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In figure, a ball isthrown up onto a roof, landing some time later at heighth = 20.0 m above and d = 30.0 m horizontally from the release point.The ball's path just before landing is angled at θ =60.0o with the horizontal roof. (a) Find the time offlight. (b) What is the magnitude of the ball's initial velocity

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