Newtonian mechanics | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-03-20

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Classical_mechanics


00:02:05 1 Description of the theory
00:03:47 1.1 Position and its derivatives
00:04:50 1.1.1 Velocity and speed
00:06:16 1.1.2 Acceleration
00:08:00 1.1.3 Frames of reference
00:09:19 1.2 Forces; Newton's second law
00:11:41 1.3 Work and energy
00:13:58 1.4 Beyond Newton's laws
00:18:44 2 Limits of validity
00:24:43 2.1 The Newtonian approximation to special relativity
00:26:14 2.2 The classical approximation to quantum mechanics
00:28:19 3 History
00:30:47 4 Branches
00:32:47 5 See also
00:39:20 6 Notes
00:40:45 7 References



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SUMMARY
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Classical mechanics describes the motion of macroscopic objects, from projectiles to parts of machinery, and astronomical objects, such as spacecraft, planets, stars and galaxies.
If the present state of an object is known it is possible to predict by the laws of classical mechanics how it will move in the future (determinism) and how it has moved in the past (reversibility).
The earliest development of classical mechanics is often referred to as Newtonian mechanics. It consists of the physical concepts employed by and the mathematical methods invented by Isaac Newton and Gottfried Wilhelm Leibniz and others in the 17th century to describe the motion of bodies under the influence of a system of forces.
Later, more abstract methods were developed, leading to the reformulations of classical mechanics known as Lagrangian mechanics and Hamiltonian mechanics. These advances, made predominantly in the 18th and 19th centuries, extend substantially beyond Newton's work, particularly through their use of analytical mechanics. They are, with some modification, also used in all areas of modern physics.
Classical mechanics provides extremely accurate results when studying large objects that are not extremely massive and speeds not approaching the speed of light. When the objects being examined have about the size of an atom diameter, it becomes necessary to introduce the other major sub-field of mechanics: quantum mechanics. To describe velocities that are not small compared to the speed of light, special relativity is needed. In case that objects become extremely massive,  general relativity becomes applicable. However, a number of modern sources do include relativistic mechanics into classical physics, which in their view represents classical mechanics in its most developed and accurate form.