While standing at the edge of the roof of a building, a man throws a stone upward with an initial speed of 6.27 m/s. The stone subsequently falls to the ground, which is 13.5 m below the point where the stone leaves his hand. At what speed does the stone impact the ground? Ignore air resistance and use ? = 9.81 m/s^2 for the acceleration due to gravity.

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Projectile Motion