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Chapter 1: Introduction to Physics
1. Why This Matters
Imagine you are lying on your back on a warm evening, staring up at the sky. You see the Moon. You feel a gentle breeze. Somewhere far away, a phone buzzes. A car passes. Your own heart beats, quietly, without you ever telling it to.
Every single one of those things — the Moon's orbit, the breeze, the buzz, the car, your heartbeat — is physics happening. Physics is not a subject locked inside a textbook. It is the story of how everythin
