A wheel has a speed of 1200 revolution per minute and is made to slow down at a rate of $4\;radian/s^2$. The number of revolutions it makes before coming to rest is

Question

\[\begin {array} {1 1} (a)\;143 & \quad (b)\;272 \\ (c)\;314 & \quad  (d)\;722 \end {array}\]