I would have already tried that answer but the question asks for the answer to be in only two significant figures. "3.16" is three figures is it not (this significant figure thing is a bit confusing)?
I am close to positive I am going at this problem the correct way, but there seems to be some error somewhere. This problem is from online homework.
Homework Statement
A hot-air balloon has just lifted off and is rising at the constant rate of 2.2 m/s. Suddenly one of the passengers...