How did the changing variables affect the vertical and horizontal motion of the payload? Changing the variables did have an affect on the motion of the payload. By adding the headwind, in the 1st scenario, there would need to be an adjustment to the drop site made. In the original scenario, the drop site would be 2598.28m and in scenario 1 the drop site would be at 2546.34 which is a difference of 51.94m. In scenario 2, the catapult was in a fixed position and didn't have to have a force of gravity to complete the launch, only the initial forces, 67m/s and 50 degree launching angle, were needed. What adjustments to delivery would need to be made to account for these changing variables? The plane would need to adjust its speed accordingly in order to account for the headwind so the payload could still be dropped in the specified area. For the catapult, increasing either the distance from the drop zone or the height that it was located below the drop zone could have been increased or decreased depending on the angle