The function

$x=(4\mathrm{.}6m)cos[(4ra\frac{d}{s})t+\frac{}{5}$rad$]$

gives the simple harmonic motion of a body. At $t=9\mathrm{.}4s,$ what are the $($a$)$ displacement, $($b$)$ velocity, $($c$)$ acceleration, and $($d$)$ phase of the motion? Also, what are the $($e$)$ frequency and $($ f $)$ period of the motion?

$($a$)$ Number Units

$($b$)$ Number

$!$ Units

$($c$)$ Number Units

$($d$)$ Number

i

$!$ Units

$($e$)$ Number

Units

$($f$)$ Number

Units