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Note: All quantities in bold represent vectors.
Classical mechanics is the branch of physics used to describe the motion of macroscopic objects.^{[1]} It is the most familiar of the theories of physics. The concepts it covers, such as mass, acceleration, and force, are commonly used and known.^{[2]} The subject is based upon a threedimensional Euclidean space with fixed axes, called a frame of reference. The point of concurrency of the three axes is known as the origin of the particular space.^{[3]}
Classical mechanics utilises many equations—as well as other mathematical concepts—which relate various physical quantities to one another. These include differential equations, manifolds, Lie groups, and ergodic theory.^{[4]} This page gives a summary of the most important of these.
Contents
Equations
where n is the number of mass particles.
Continuous case:
where ρ(s) is the scalar mass density as a function of the position vector
Velocity
average velocity = change in distance / change in time
Acceleration
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