1. The problem statement, all variables and given/known data A marble is thrown horizontally with a speed of 10 m/s from the top of a building. When it strikes the ground, the marble has a velocity that makes an angle 68° with the horizontal. From what height above the ground was the marble thrown? 2. Relevant equations delta y = (V02 sin2 theta)/(2g) 3. The attempt at a solution 4.39 m and 421.24. Neither correct.