In the figure here, a ball is thrown up onto a roof, landing 4.20 s later at height h = 23.0 m above the release level. The ball's path just before landing is angled at θ = 62.0˚ with the roof. Find the horizontal distance d it travels. (Hint: One way is to reverse the motion, as if it is on a video.) What are the magnitude and angle (relative to the horizontal) of the ball's initial velocity?

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Projectile Motion