Motion In A Straight Line

A student is at a distance 16 m from a bus when the bus begins to move with a constant acceleration of \(9 \mathrm{~m} \mathrm{~s}^{-2}\). The minimum velocity with which the student should run. towards the bus so as the catch it is \(\alpha \sqrt{2} \mathrm{~ms}^{-1}\). The value of \(\alpha\) is