An object, moving with a speed of 6.25 m/s, is decelerated at a rate given by : ${{dv} \over {dt}} = - 2.5\sqrt v $ where v is the instantaneous speed. The time taken by the object, to come to rest, would be :

Question

An object, moving with a speed of 6.25 m/s, is decelerated at a rate given by :
${{dv} \over {dt}} = - 2.5\sqrt v $ where v is the instantaneous speed. The time taken by the object, to come to rest, would be :