A mass $)=(1\mathrm{.}51kg$ is connected to a spring of spring constant $k=72\mathrm{.}87\frac{N}{m}$ and set into simple harmonic motion along the $x-$axis about the point $x=0m.$ At time $t=0s,$ the mass is located at vec$(r)(0)=-0\mathrm{.}236$mhat$(i)$ and traveling with velocity vec$(v)(0)=-2\mathrm{.}285\frac{m}{s}$hat$(i).$

What is the velocity of the mass at time $t=0\mathrm{.}659s?$

$\frac{m}{s}$hat$(i)$