We extract the value for g by fitting a parabola in the first case and a line for the latter. To facilitate data manipulation, it is convenient to use a spreadsheet such as Microsoft Excel. The results we obtained from our analysis are shown in Figs. 4 and 5. The values obtained for the acceleration due to gravity are g = 9.82 m/s2 and g = 9.80 m/s2, respectively. These values are in good agreement with the adopted value of g = 9.806 m/s2.