How do pull back cars work?

Ever wondered what makes a pull-back toy car so satisfying? According to the Adafruit Blog, it's all about clockwork engineering. Push the car down, pull it backward, and you're winding up a spring inside the chassis. That stored energy is then released in a burst that sends the tiny vehicle rocketing forward at surprisingly high speeds. It's the same principle behind wind-up toys — simple mechanics, remarkable results.

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