1)y=g*x^2/(2Vo^2)
2)hmax=(V0^2*sin alpha)/2g
3)g=(V0^2*sin alpha)/2hmax
g=(y2V0^2)/x^2
g=(2sin alpha*x^2)/(y*2hmax)
1)y=g*x^2/(2Vo^2)
2)hmax=(V0^2*sin alpha)/2g
3)g=(V0^2*sin alpha)/2hmax
g=(y2V0^2)/x^2
g=(2sin alpha*x^2)/(y*2hmax)