When solving any problem of this type it is helpful to use the following problem solving steps.
1) Write down what is known. *important*
V_{i} (initial velocity) = 0
t (time) = 3.2s
d = variable we are solving for
a (acceleration) = 9.8 m/s^{2}
2) Which equation applies?
The correct formula will contain the known variables and only one unknown, which will be the variable we are solving for (d).
The correct formula is d = v_{i}*t+1/2 at^{2}^{ }because v_{i}=0, which makes the v_{0}*t term drop out, leaving us with d=1/2at^{2}
3) Now for the easy part, plug in and solve.
d = 1/2*9.8*3.2^{2}
The answer is 50.2m
9/4/2013

Jon L.