Sprint 39 · Chapter 4

Aristotle's Mistake And Galileo's Inertia

See why it looks as if motion needs a force, what friction was hiding, and how Galileo's inclined planes revealed inertia.

1. 1Why Aristotle Seemed Right
2. 2Galileo's Inclined Planes
3. 3Inertia Concept Check
4. 4Explain Where Aristotle Went Wrong