---
tags:
  - science/physics
  - laws
  - classical-mechanics
  - newton
created: 2026-05-16
breadcrumb: "Physics > Laws of physics > Newton's laws of motion"
---

# Newton's laws of motion

> **Mechanism:** Classical mechanics baseline

## Items

- **First law** — A body at rest stays at rest, a body in motion stays in uniform motion — unless acted upon by a net external force. Inertia.
- **Second law** — F = ma. The net force on a body equals its mass times its acceleration.
- **Third law** — Every action has an equal and opposite reaction. Forces come in pairs.

## Related

- [[conservation-laws]]
- [[famous-physics-equations]]