1. The problem statement, all variables and given/known data A stone is thrown straight upward with a velocity of 10V and travels upward a distance X. What is the displacement when the object is traveling at 5V? 2. Relevant equations xf=x0+v0t+1/2at^2 vf=v0+at vf^2=v0^2+2ax 3. The attempt at a solution .75X? Further, what's the most efficient way of solving for it?