c
સરેરાશ ઝડપ \(\,{v_{av}} = \,\,\frac{{0 + 2 + 3 + 4 + 4 + 4 + 5 + 5 + 6 + 9}}{{10}}\,\, = \,\,\frac{{42}}{{10}}\,\,\, = \,\,\,4.2\,\,m{s^{ - 1}}\)

\(rms\) ઝડપ \({v_{rms}} = \,\,\,{\left[ {\frac{{{{(0)}^2} + {{(2)}^2} + \,{{(3)}^2} + \,\,{{(4)}^2} + \,\,{{(4)}^2} + \,\,{{(4)}^2} + \,\,\,{{(5)}^2} + \,\,{{(5)}^2} + \,\,{{(6)}^2} + \,\,{{(9)}^2}}}{{10}}} \right]^{1/2}}\,\,\)

\( = \,\,\,\,{\left[ {\frac{{228}}{{10}}} \right]^{1/2}} = \,\,\,4.77\,\,\,m{s^{ - 1}}\)

મહતમ શક્ય ઝડપ \( {v_{mp}}\,\, = \,\,4\,\,\,m/s\)