1. The problem statement, all variables and given/known data Physics question: A golfball with an initial speed of 57.9 m/s lands exactly 85 m downrange on a level course. The acceleration of gravity is 9.8 m/s^2 Neglecting air friction, what minimum projection would achieve this result ? What maximum projection would achieve this result ? Answer in units of degrees Please. 2. Relevant equations 3. The attempt at a solution Viy=57.9 sin theta ay= -9.8 delta y=0 vix=57.9 cos theta ax= 0 delta x=85 from horizontal, t= 85/(57.9 cos theta) from vertical, 0 = (57.9 sin theta) t + 1/2 (-9.8) (t)^2 So i tried doing it and got to the point so far and got stuck (can't seem to do the algebra). can anyone show me how to do this please Thanks.