At t$=0$t$=0,$ an $820-$gg mass at rest on the end of a horizontal spring $($kk $=190$ N$/$mN$/$m $)$ is struck by a hammer which gives it an initial speed of $2\mathrm{.}38$ m$/$sm$/$s $.$

Part A

Determine the period of the motion.

Determine the frequency of the motion.