I can't see how this is a "free-fall" problem as the acceleration of the object is not g. Here's how I would approach this.

We can assume that the acceleration is constant, so we can model the height as

We can typically take h0 to be the height at ground level, so set h0 = 0 ft. Then we have

You know that

and

We have two simultaneous equations in v0 and a.

-Dan