You attach a $1\mathrm{.}50$ kg mass to a horizontal spring that is fixed at one end. one end. You pull the mass until the spring is stretched by $0\mathrm{.}100$ m and surface with negligible friction. The riass reaches a speed of zero again $0\mathrm{.}600$s after release $($for the first time after release$).$ What is the maximum speed of the mass $($in m$/$s$)?$