Crumple Zones Inertia

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As was mentioned in the previous topic of crumple zones inertia plays a great part in car crashes. When a car comes to an abrupt stop the driver continues to move in the car’s direction, this is because of inertia the resistance to a change in speed or direction of travel. Newton’s first law states an object at rest will stay at rest also unless acted upon by an external force conversely an object that is moving will keep moving in the same direction and speed unless acted upon by a external force the external force being the seat belt. This is because the velocities of the car and passenger are independent. The seat belt spreads this stopping force over a larger area as a result preventing the driver’s body from hitting the windshield or steering

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