u22g\frac{u^{2}}{2 \mathbf{g}}2gu2
u2 g\frac{\mathrm{u}^{2}}{\mathrm{~g}} gu2
2u2g\frac{2 u^{2}}{g}g2u2
u2sin2α6\frac{u^{2} \sin 2 \alpha}{6}6u2sin2α