1. The problem statement, all variables and given/known data A horizontal spring, of force constant 12 N/m is mounted at the edge of a lab benchto shoot marbles at targets on the floor 0.93 m below. A marble of mass 8.3 x 10 -3 Kg is shot from the spring, which is initally compressed a distance of 4.0 cm. How far does the marble travel horizontally before hitting the floor? 2. Relevant equations Eg = mgh Ee =0.5 k x^2 Ek= 0.5 m v^2 time to hit floor d = 0.5 (g) t^2 and Vx = d / t 3. The attempt at a solution Ek = Eg+ Ee then find t then use t to find d, that gave me 1.97 m but the answer in the book was 0.66 m. This may be due to the fact that i do not know the launch angle and could not incorporate it into my calculation. Im confused.