I assume you are looking for the formula, and the velocity.
The formula: v1^2-v0^2=2aS
where v0=initial velocity (0 if object falls from rest), ft/s v1=velocity reached after falling a distance S, ft/s S=distance from initial position, positive downwards (for falling objects), ft a=acceleration due to gravity, 32.2 ft/s^2 in imperial units
So substituting numbers, assuming initial velocity is zero (from rest), then S=25 ft v1^2-0^2=2*32.2*25 v1^2=1610 v1=sqrt(1610) =40.1 ft/s
