A bicycle wheel has an initial angular velocity of $0\mathrm{.}500$ rad$/$s $.$ If its angular acceleration is constant and equal to $0\mathrm{.}200$ rad$/$s$2,$ what is its angular velocity at t $=2\mathrm{.}50$ s $?($Assume the acceleration and velocity have the same direction$)$ Through what angle has the wheel turned between t $=0$ and t $=2\mathrm{.}50$ s $?$