v02g\frac{v_{0}^{2}}{g}gv02
v0g2\frac{v_{0}}{g^{2}}g2v0
v02g2\frac{v_{0}^{2}}{g^{2}}g2v02
2v0sinθg\frac{2 v_{0} \sin \theta}{g}g2v0sinθ