A ball is thrown upward... hard question?? 1. The problem statement, all variables and given/known data A ball is thrown up from 64 feet above the ground with an initial velocity equal to 128 feet per second. Find when and with what speed the ball hits the ground. 3. The attempt at a solution v = 128 anti derivative of velocity yields ---> 128x + c since the initial height is 64, plug in (0, 64) 128(0) + c = 64 c = 64 position function ---> 128x + 64 solve for x, 128x + 64 = 0 x = -1/2 I got here and realize my answer doesn't make any sense. Any help would be much appreciated, Thanks!