Question

Give the definition of classical mechanics.

Answer 1

Hint:Mechanics is a branch of physics that studies the motions of physical objects, especially the interactions between force, matter, and motion. Displacements, or changes in an object's position relative to its surroundings, are caused by forces applied to it.

Complete answer:
Classical mechanics is the branch of physics concerned with the classification and interpretation of the motion of point-like, extended rigid, and deformable structures embedded in a three-dimensional Euclidean space. Kinematics is the branch of mechanics that only deals with the geometrical explanation of motion, such as Galileo's laws of falling bodies or Kepler's laws of planetary motion.

The part of the motion that includes a causal explanation and a description such as the application of Newton's laws of motion, Newton's laws of gravitation, and so on is called dynamics. When studying large objects that are not incredibly huge and have speeds that do not exceed the speed of light, classical mechanics produces extremely reliable results.

When the structures under investigation are about the size of an atom, the other main sub-field of physics, quantum mechanics, must be introduced. General relativity becomes true as objects become incredibly large. However, a number of modern sources include relativistic mechanics in classical physics, which they believe is the most evolved and accurate type of classical mechanics.

Note:If the current state of an object governed by classical mechanics is known, it is possible to foresee how it will move in the future (determinism), as well as how it has moved in the past (reversibility). Geometric optics is a simplified version of the quantum theory of light that lacks a superior "classical" form.