A wheel has a constant angular acceleration of $5\mathrm{.}0$ rads$/$s$2.$ Starting from rest, it turns through $300$ rad. $($a$)$ What is its final angular velocity? $($b$)$ How much time elapses while it turns through

the $300$ radians? Answers are $54\mathrm{.}8$ rads$/$s and $11\mathrm{.}0$ s respectively