Parachute is used to slow down the fall of a person or an object from aircraft or from any other great height. The operation of the parachute is based on simple principles.
Gravity pulls the object quickly down toward the Earth.
But air resists the object's movement. Because the pull of gravity is much stronger than the resistance of the air, the air can only slow down the speed of the falling object. Large, flat surfaces offer a greater area of resistance to the air than do thin, sharp surfaces. Therefore, an object shape like a saucer falls more slowly than one shaped like a needle.