$[5/6$ Points$]$

LARSON$812\mathrm{.}4\mathrm{.}036.$

ASK YOUR TEACHER

Find $T(t),N(t),a_T,$ and $a_N$ at the given time $t$ for the curve $r(t).($Give your answers correct to $3$ decimal places.$)$

$r(t)=t^{2}i+3tj,t=2$

$T(t)=$

$N(t)=$

$a_T=$

$a_N=$

$i+1$