A body oscillates with simple harmonic motion along the x$-$axis. Its displacement varies with time according to the equation x $=5\mathrm{.}0$ sin $($t $+$ $/3).$

For the body at t $=1\mathrm{.}0$ sec$,$ what are:

a$)$ The velocity $($in m$/$s$)$

b$)$ The acceleration $($in m$/$s$2)$