engifact on Instagram: "Ever wonder how airbags deploy within 40 milliseconds of a crash? ⚙️💥 They’re one of the most precisely timed safety systems ever built — and they rely on physics, chemistry, and sensors working in perfect sync. Here’s the breakdown: 🚗 1. Sensing impact: Tiny accelerometers inside your car continuously measure deceleration. When they detect a sudden change above a set threshold (≈20–25 g), the system knows a collision is happening. ⚡ 2. Instant decision: A microcontroll