When you increase your speed, your stopping distance increases in proportion, and the force of impact is squared.
Your seatbelt holds you to your seat in the event of a crash, in line with Newton's theory of inertia, which states that a body will continue in the same direction and at the same speed unless another force compels it to change either vector. Your seatbelt is held in tight by the buckle and the clip to the side of the seat, and its strength is the force that holds you back in the event of an accident. It also prevents you from flying through the windscreen when you brake suddenly. Hence why they are so important and why you should wear them.
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We are one, we are strong... the more you hold us down, the more we press on - Creed, "What If"
AS is definitive. Reality is frequently inaccurate.
I'm the same as I was when I was six years old - Modest Mouse