Thrust is when you throw the paper airplane and how much force you use to throw it. Another force pushing it up is lift. Lift is “air moving over and under the wings is providing an upward lift force on the plane”. 1. Without these force the paper airplane will not go up.
While thrust and lift are pushing up the paper airplane, gravity and drag are pulling
it down. Gravity is a force that pulls two or more objects toward each other. The last force acting on the paper airplane is called drag. Drag is “air pushing back against the plane slowing it down”.1. If you add weight, it will only cause the paper airplane to go downward.