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Skydiving Research Paper

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How is the size of a parachute important in skydiving?

Parachutes are used for many things. They are used by race cars, space shuttles, aircraft and skydivers to help them slow down to a safe speed. The parachute slows the speeding body down because it causes air resistance, or drag. Drag is the friction between an object and the air that it is moving through. The larger an object is, the bigger the surface area it will have. This larger surface area causes more air molecules to be moved aside which leads to more drag. The more drag, the slower the speed of descent. The air causing this drag pushes the parachute back up, and creates a force opposite to the force of gravity or any force that is moving forward. As a skydiver falls slowly to the earth with a parachute, these "push and pull" forces are nearly in balance. The drag force from the parachute is slightly less than the force of gravity, so the …show more content…
His First Law of Motion states that if the forces on an object are in balance, the object's speed and direction of motion won't change. Therefore if an object is not moving, it will continue to stay still and if it is moving, it will continue to move in a straight line at a constant speed. Skydivers go through periods of time on every jump where the forces are not balanced therefore they are often accelerating. It is known that the force of gravity is pulling all objects towards the earth at an acceleration rate of 9.8m/s2 .
In free fall (without the parachute out) the force of gravity is greater than the drag on the body so it accelerates. The faster an object moves through air, the greater the drag. This means that as the skydiver accelerates the amount of drag increases. Eventually, the drag will be equal to the force of gravity which means that the person will no longer be accelerating, but moving at a constant speed just as Newton described. This is called terminal velocity, and is roughly 125 miles per

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