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Selasa, 27 November 2012

Newton's laws of motion

Newton's laws of motion are three physical laws that form the basis of classical mechanics. This law describes the relationship between the forces acting on an object and the motion they produce. This law has been written with a different pembahasaan for nearly three centuries, and can be summarized as follows:

First Law: Every object will have a constant velocity unless a non-zero resultant force acting on the object. Meaning if the resultant force is zero, then the center of mass of an object remains at rest or moving at a constant speed (not accelerating).
Second Law: A body of mass M having the resultant force of F will accelerate a direction similar to the direction of the force, and the magnitude is proportional to F and inversely proportional to M. or F = Ma. It could also mean the resultant force acting on an object is equal to the derivative of the linear momentum of the object with respect to time.
Third Law: action and reaction force of two objects have the same magnitude, the direction reversed, and the line. This means that if an object A, which gives a force of F on object B, then object B will give a force of-F to object A. F and-F have the same magnitude but different direction. This law is also known as the action-reaction law, with F called the action and-F is a reaction.

The three laws of motion was first summarized by Isaac Newton in his Philosophiae Naturalis Principia Mathematica, first published on July 5, 1687. Newton used his work to explain and investigate the motion of a variety of physical objects and systems. For example, in the third volume of the text, Newton showed that the laws of motion combines with the general law of gravity, he can explain Kepler's laws of planetary movements belong.

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