When (if) you are in a car that is in an accident it is very important that along with your car that your body slows down. That is why crumple zones exist.
Lets say you were in a car that was going 30 mph. Thats not very fast. And lets say that the car hits a very solid object that is much bigger and more massive then your car. And lets say that you actually are wearing seatbelts too. This means that you are now part of the car.
So car hits really big object. If the car was not designed to crumple then you, being strapped into and part of the car, would be slowed down very quickly. This would hurt.
On the other hand if the car did have effective crumple zones they would crumple and bring the car and you to a stop slower and more gently. You would take off your seatbelt and walk away without a scratch.
On the third hand if you did not have seat belts on the car would have stopped slower and more gently but you, not being part of the car, would keep moving until you hit parts of the car that had already stopped. Probably your head would smash into the windshield (windscreen) resulting in the windshield AND your head getting shattered. The windshield would get broken like things made of glass do and your head would end up broken like a ripe grape dropped from 10 ft.
Lets say you were in a car that was going 30 mph. Thats not very fast. And lets say that the car hits a very solid object that is much bigger and more massive then your car. And lets say that you actually are wearing seatbelts too. This means that you are now part of the car.
So car hits really big object. If the car was not designed to crumple then you, being strapped into and part of the car, would be slowed down very quickly. This would hurt.
On the other hand if the car did have effective crumple zones they would crumple and bring the car and you to a stop slower and more gently. You would take off your seatbelt and walk away without a scratch.
On the third hand if you did not have seat belts on the car would have stopped slower and more gently but you, not being part of the car, would keep moving until you hit parts of the car that had already stopped. Probably your head would smash into the windshield (windscreen) resulting in the windshield AND your head getting shattered. The windshield would get broken like things made of glass do and your head would end up broken like a ripe grape dropped from 10 ft.
