How do i find the resultant acceleration

Let denote the North-facing force, and the South-facing force. Let's also take North-facing vectors as having positive direction.

The resultant force on the body is

Then we have

where is the resultant acceleraton vector. So

It looks like you assumed gravity was involved here, but that doesn't seem to be the case, at least not to me. We're given two forces, and only these two forces as far as I can tell, so you shouldn't assume there are any others acting on the body.

well, you would divide 135 by 33 to get your answer. then that is how many seconds it would take. boardman should fly about 132 m or 4.090909090909091 seconds.

neither accurate nor precise.