A toy cannon is located 15.0 m horizontally away from the base of a 10.5 m high building. A ball is fired from the cannon at an angle of 60.0°, and it passes some unknown distance above the top edge of the building, 1.5 s after it is being fired. (a) What should be the initial velocity of the ball so that it clears the building? (b) How far above the edge of the building is the ball when it passes over the top edge of the building? (c) Is the ball going down or still going up, at the point where it clears the wall? Justify your answer

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Projectile Motion