Newton's laws

Classical mechanics foundation

Newton's laws are three fundamental principles of classical mechanics formulated by Isaac Newton.

The first states that objects remain at rest or in uniform motion unless acted upon by a force.

The second relates force, mass, and acceleration: F = ma.

The third holds that every action produces an equal and opposite reaction.

Together they describe how physical objects move and interact, forming the foundation of physics until Einstein's relativity.

Opposites
physical framework

Newton's lawsquantum mechanics

Physics at nanoscopic scales

general relativity · special relativity · Schrödinger equation · string theory · quantum theory

scientific validity

Newton's lawsAristotelian physics

Ancient Greek motion theory

pseudoscience · perpetual motion · magical thinking · phlogiston theory · superstition

Family

Newton, Newtonian

Familiarity
Top 200,000
Profile
Known to kids · Used worldwide · Timeless · Abstract · Rated G