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A man stands on the roof of a building of height 15.1 m and throws a rock with a velocity of magnitude 30.1 m/s at an angle of 30.1 above the horizontal. You can ignore air resistance.
Calculate the maximum height above the roof reached by the rock.
Calculate the magnitude of the velocity of the rock just before it strikes the ground.
Calculate the horizontal distance from the base of the building to the point where the rock strikes the ground.