Part A

At what time t$1$t$1$ does the block come back to its original equilibrium position $($x$=0$x$=0)$ for the first time?

Express your answer in terms of some or all of the variables: AA$,$ kk$,$ and mm$.$

View Available Hint$($s$)$for Part A

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t$1$t$1=$

nothing

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Part B

Find the velocity vv of the block as a function of time.

Express your answer in terms of some or all of the variables: kk$,$ mm$,$ AA$,$ and tt$.$