Expand the following: \begin{align} Ss_2 = \frac{50*(\frac{80}{3.6})^2}{(\frac{80}{3.6})^2 * cos5 - 2*50*9.81*sin5}*m &= \cssId{Step1}{\frac{50*22.22^2}{22.22^2*0.997-981*0.087}*m} \\[3px] &\cssId{Step2}{{} = \frac{50*493.72}{493.72*0.997-85.35}*m} \\[3px] &\cssId{Step3}{{} = \frac{24612}{492.24-85.35}*m} \\[3px] &\cssId{Step4}{{} = \frac{24612}{406.89}*m} \\[3px] &\cssId{Step5}{{} = 60.49*m} \end{align}