A spring with $k = 500\ \text{N/m}$ is squeezed by $0.20\ \text{m}$ against a $1.0\ \text{kg}$ block on a rough floor with $\mu_k = 0.25$, then let go. How far, in metres, does the block move from where it was let go before it stops? Take $g = 10\ \text{m/s}^2$.