H=h0+uot-gt^2/2
x1=4*t+0,25*t^2 x2-150-6*t-0,25*t^2 x1=x2 4*t+0,25*t^2=150-6*t-0,25*t^2 0,5*t^2+10*t-150=0 t=10 c x=4*10+0,25*16=65 м