Problem $13\mathrm{.}026-$ Blocks resting on spring

A $2\mathrm{.}000-kg$ block rests on top of a $2-$kg block supported by$,$ but not attached to$,$ a spring of constant $40\frac{N}{m}.$ The upper block is suddenly ramnver

Problem $13\mathrm{.}026.$a $-$ Speed achieved by a block resting on a spring

Determine the maximum speed reached by the $2-$kg block. $($Round the final answer to three decimal places.$)$

The maximum speed reached by the $2-$kg block is $q,\frac{m}{s}.$