1. The problem statement, all variables and given/known data A projectile is fired from a cliff 125m off the ground at 37° from the horizontal at 65 m/s. How long will it take to hit the ground? 2. Relevant equations y= yo+(Vyo)(t) - 1/2(g)(t^2) quadratic formula 3. The attempt at a solution substituting in equation.... (-125m)= 0 + (65m/s)(t) - 1/2 (9.8 m/s^2)(t^2) (4.9 m/s^2)(t^2)- 65 m/s (t) -125m =0 rewrite in quadratic to solve for t t=((65 m/s) +/- √((65)^2-4(4.9 m/s^2)(125)))/ 2(4.9m.s^2) t = 10.9 s answer in back of book is 10.4 s not sure if using proper equation or totally missing something.