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Car safety and Newton's laws of motion

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Celia Schreiber

on 22 April 2010

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Transcript of Car safety and Newton's laws of motion

Car saftey and Newton's laws of motion SEAT BELTS AIR BAGS by Celia Schreiber law of Inertia: The tendancy of a moving object to keep moving unless something
works against the moving object. Basically, Objects that are in motion want to stay in motion, Objects at rest want to stay at rest. What is a seatbelt? A seat belt is a stap, which you buckle and secure. The main pupose of the seat belt is to keep you secure and safe. Types of seat belts: Two point seat belt (serves as a lap belt) Three point seat belt (serves a shoulder and hip belt) Shoulder belt (self explanitory) Who invented the seat belt? The three point seat belt was inventd by Nils Bohlin (1920-2002), which he introduced the design to the car company Vovlvo. How does a seat belt keep the passenger safe? Everything in a vehical has it's own Inertia, which means the passengers have their own Inertia, your coffie mug has it's own Inertia, everything that's inside the car that isn't the car has it's own Inertia. So what does this all have to do with keeping passengers safe? When your in a crash, two senarios could've happened.
1. You went flying through a windowsheild.
2. You remained secure but stunned. Which sounds better?
(number two)! BUT HOW? Reason you didn't go flying through the window shield is basically, your "part of the car" when your strapped in. When your strapped in, you and the car move as one unit. Whe your not strapped in, you and the car don't move as one unit. So naturally, when your in a car crash and your not strapped in, you will fly out the window.
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