8th grade science question?

a student wanted to test her FOSS plane to find out if wings would help her fly the length of the flight line any faster.she constructed four sets of wings.each had the same shape,the same width,and a different length. 1,2,3,4.she started by setting up a flight line and putting 60 winds on the propeller of her plane.she got a stopwatch and timed how long it took the plane to fly from one end of the flight line to the other without any wings. what should she do next to complete her experiment and report her findings to her class?