The spring block system lies on a smooth horizontal surface. The free end of the spring is being pulled towards the right with constant speed ${\mathrm{V}}_0=2 \mathrm{m} {\mathrm{s}}^{-1}$. At $\mathrm{t}=0\mathrm{ }\mathrm{s}$, the spring of constant $\mathrm{k}=100\mathrm{ }\mathrm{N} \mathrm{c}{\mathrm{m}}^{-1}$ is unstretched and the block has a speed $1\mathrm{ }\mathrm{m} {\mathrm{s}}^{-1}$ to left. The maximum extension of the spring will be