Newton’s Laws
Summary: Three fundamental laws of motion that describe the relationship between forces and movement. Tags: concepts physics forces Created: 2026-05-03T00:00:00Z Last Updated: 2026-05-03T00:00:00Z
Content
Newton’s three laws of motion describe how forces govern the motion of objects:
- First Law (Inertia): An object remains at rest or in uniform motion unless acted on by a resultant force.
- Second Law (F = ma): The acceleration of an object is proportional to the resultant force and inversely proportional to its mass.
- Third Law (Action-Reaction): For every action force, there is an equal and opposite reaction force on a different object.
These laws explain why balanced forces maintain motion, unbalanced forces cause acceleration, and forces always come in interaction pairs.
Force is measured in newtons (N); 1 N accelerates 1 kg at 1 m/s².