The kinetic energy is given by:
[tex]K=\frac{1}{2}mv^2[/tex]We know the mass and the maximum speed, plugging their values in the expression above we have:
[tex]\begin{gathered} K=\frac{1}{2}(9.1\times10^{-31})(8\times10^6)^2 \\ K=2.91\times10^{-17}\text{ J} \end{gathered}[/tex]Therefore, the answer is d.
