How did Newton’s mechanics replace the Aristotelian view of motion?
Newton’s mechanics replaced the Aristotelian view of motion by providing a unified, mathematical framework that discarded the ancient distinction between terrestrial and celestial physics.12
Aristotelian physics assumed that constant motion required a constant force and that objects naturally sought a state of rest or their "natural place". In contrast, Newton’s laws of motion established that motion is a state that persists unless altered by an external force, a concept known as the law of inertia.3245
Key shifts included:
* Inertia: Newton, building on work by Galileo Galilei and René Descartes, recognized that rest and uniform motion in a straight line are physically equivalent states.45
* Universal Laws: Newton synthesized terrestrial and celestial motion by applying the same laws to both, using gravity to explain planetary orbits as elliptical paths rather than Aristotelian circular motions.152
* Dynamics: By defining force as the cause of changes in motion (), Newton provided a quantitative method to predict the behavior of all matter, effectively ending the reliance on Aristotelian "natural" and "violent" motions.152