by formula: vf=v0+at vf=-25+(-9.8)*2=-44.6m/s GIVEN: v0=0m/s (accelerate from rest) a=25m/s^2 (upward) t=5s FIND: x SOLVE: x= x1+ x2 Before 5 s of accelerating by formula: x=v0*t+(1/2)a*t^2 x1=v0*t+1/2at^2=0+(1/2)*25*5^2=312.5 m v0'=v0+at=...