An object, moving with a speed of $6.25\, m/s$, is decelerated at a rate given by
$\frac{{dv}}{{dt}} = - 2.5\sqrt v$
where $v$ is the instantaneous speed. The time taken by the object, to come to rest, would be ........$s$
$\frac{{dv}}{{dt}} = - 2.5\sqrt v$
where $v$ is the instantaneous speed. The time taken by the object, to come to rest, would be ........$s$
- A$4$
- B$8$
- C$1$
- D$2$
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