Ms.Rosa's Physics on Kites School

Drag? What is drag? Drag is the backward force that acts opposite to the direction of motion.  Drag is caused by the difference in air pressure between the front and back of the kite and the friction of the air moving over the surface of the kite.  To launch a kite into the air the force of lift must be greater than the force of weight.  To keep a kite flying steady the four forces must be in balance.  Lift must be equal to weight and thrust must be equal to drag.