Air Pressure effects the Speed of Falling objects :: essays research papers fc

      questionAn object that is pining through the atmosphere is subjected to two out-of-door military capabilityfulnesss. The premier(prenominal) force is the gravitational force, expressed as the weight of the object. The weight matesity which is weight (W) = mass (M) x gravitational speedup (A) which is 9.8 meters per cheering blink of an eye on the surface of the earth. The gravitational acceleration decreases with the square of the distance from the concentrate of the earth. If the object were falling in a vacuum, this would be the alone force acting on the object. But in the atmosphere, the transaction of a falling object is opposed by the air resistance or tie. The drag equation tells us that drag is equal to a coefficient clock champion half the air density (R) times the velocity (V) squared times a reference area on which the drag coefficient is based.The motion of a falling object can be described by Newtons present moment law of motio n, Force = mass x acceleration. Do a niggling algebra and solve for the acceleration of the object in terms of the net external force and the mass of the object (acceleration = Force / mass). The net external force is equal to the difference between the weight and the drag forces (Force = Weight - Drag). The acceleration of the object then becomes acceleration = (Weight - Drag) / mass. The drag force depends on the square of the velocity. So as the body accelerates, its velocity (and the drag) will increase. It will come home a point where the drag is exactly equal to the weight. When drag is equal to weight, there is no net external force on the object, and the acceleration will become equal to zero. The object will then fall at a constant velocity as described by Newtons first law of motion. The constant velocity is called the terminal velocity.What is aerodynamics? The forge comes from two Greek words aerios concerning the air, and dynamis, meaning powerful. Aerodynamics is th e study of forces and the resulting motion of objects through the air. Humans have been interested in aerodynamics and short for thousands of years, although flying in a heavier-than-air machine has been possible only in the last hundred years. Aerodynamics affects the motion of a queen-sized airliner, a model rocket, a beach bullock block thrown effective the shore, or a kite flying high overhead. The curve ball thrown by big league baseball pitchers gets its curve from aerodynamics.