A bicycle wheel has an initial angular velocity of 1.50 $\mathrm{rad} / \mathrm{s}$ .
(a) If its angular acceleration is constant and equal to 0.300 $\mathrm{rad} / \mathrm{s}^{2}$ ,
what is its angular velocity at $t=2.50 \mathrm{s} ?$ (b) Through what angle
has the wheel turned between $t=0$ and $t=2.50 \mathrm{s} ?$