Bodies in orbit will sweep out equal amounts of area in equal times

Orbits are ellipses with the body being orbited at one of the ellipse's foci

Geometric theory of gravitation/published 1915/curvature of spacetime is directly related to energy & momentum of matter & radiation present/represented by Einstein field equations

For every action there must be an equal but opposite reaction

An object at rest will remain at rest and an object in motion will remain in motion until acted upon by an outside force/inertia

The change in energy of a system is the amount of energy added to the system minus the energy spent doing work/Law of Conservation of Energy

Laws of physics governing orbiting bodies/mathematically proven by Newton

The square of the period of an orbit is directly proportional to the cube of the radius

Description

Law

Any 2 bodies in universe attract each other w/force directly proportional to product of their masses & inversely proportional to the square of distance between them

It is impossible to reduce any system to absolute zero in a finite series of operations/A perfectly efficient heat engine cannot be created

2 systems each in thermal equilibrium with a third system are in thermal equilibrium with each other

The sum of the forces equals mass x acceleration

Laws of physics governing motion in its classical sense

A process cannot have as its sole result the transfer of heat from a cooler to a hotter body/In any closed system the entropy of the system will either remain constant or increase

The rate of heat loss of a body is proportional to the difference in temperatures between the body and its surroundings

Proposed in 1905 in 'On the Electrodynamics of Moving Bodies'/assumes laws of physics are invariant in all inertial systems & c in a vaccuum is same for all observers

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