Answer
$48m$
Work Step by Step
Recall the following equation:
$t=\frac{L}{v_{s}}$
Thus, we obtain:
$=\frac{12m}{5m/s}=2.4s$
We plug t=2.4 seconds and other known variables in the following equation to solve:
$d+L=vt$
$d=vt-L=(25m/s)(2.4s)-(12m)=48m$