1. The problem statement, all variables and given/known data a ball is thrown horizontally from a height of 16.01m and hits the groung with a speed that is 5.0 times its initial speed. what was the initial speed? 2. Relevant equations 3. The attempt at a solution dx=? vx=? t=? dy= -16.01m (because the ball is falling that distance) viy= vi vfy= 5vi a= -9.8 m/s^2 vf^2= vi^2 + 2ad (5vi)^2= vi^2+ 2(-9.8)(-16.01) 25 (vi^2)= vi^2+ 313.8 what should i do next if this is right?