Why Safety Belts Work
When you ride in or on anything,
you go as fast as it goes.
Take the simplest vehicle. Suppose
it is just a seat on wheels.
Put someone on it.
Get it up to speed. Then stop the
vehicle. The rider does not stop.
Seats and Restraint System
The person keeps going until
stopped by something. In a real
vehicle, it could be the windshield...
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