9.81.6 h\frac{9.8}{1.6} \mathrm{~h}1.69.8 h
1.69.8 h\sqrt{\frac{1.6}{9.8}} \mathrm{~h}9.81.6 h
9.81.6 h\sqrt{\frac{9.8}{1.6}} \mathrm{~h}1.69.8 h
1.69.8 h\frac{1.6}{9.8} \mathrm{~h}9.81.6 h
