We as a group hypothesis that when the paper clips are inserted in the back of the wings can flying farther because the weight being back of the wing give the momentum to the thrust and that will make the paper plane fly farther. We makes three kind of planes: the paper clips insert in the front, middle, and back. We recond each planes for five times. In the data, the paper clips insert in the middle is the farther and the back is the nearest. In conclusion, the hypothesis, the paper clips are inserted in the back of the wings can flying farther is rejected. The data shows the plane inserted the paper clips in the middle of the wings could fly further.