Volkswagen Polo Owners Manual: Frontal collisions and the laws of physics
Fig. 45 Unbelted occupants in a vehicle heading for a brick wall
Fig. 46 Unbelted occupants in a vehicle striking a brick wall
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and safety warnings
The physical principles involved in a frontal collision are relatively simple. As soon as the vehicle is in motion , both the moving vehicle and its passengers gain kinetic energy.
The higher the vehicle speed and the heavier the weight of the vehicle, the greater the amount of energy that will have to be released in the event of an accident.
However, the most significant factor is the speed of the vehicle. If the speed doubles from approximately 25 km/h (15 mph) to approximately 50 km/h (31 mph), for example, the kinetic energy increases by a factor of four.
The amount of kinetic energy depends on the speed of the vehicle and the weight of the vehicle and passengers. The higher the speed and the heavier the weight, the greater the amount of energy that will be released in the event of an accident.
Passengers not wearing seat belts are not connected to the vehicle. In the event of a frontal collision they will continue to move forwards at the same speed at which the vehicle was travelling before impact, until something stops them. Because the passengers in our example are not restrained by seat belts, the entire amount of kinetic energy will only be released at the point of impact against the wall .
Even at speeds of approximately 30 km/h (19 mph) to approximately 50 km/h (31 mph), the forces acting on bodies in a collision can easily exceed one tonne (1,000 kg). These forces are even greater at higher speeds.
This example applies not only to frontal collisions, but to all accidents and collisions.
Warning lamp
Fig. 44 Warning lamp in the instrument
cluster
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and safety warnings
Lights up or flashes
Possible cause
Solution ...
What happens to vehicle occupants who have not fastened their seat belts
Fig. 47 An unbelted driver is thrown forwards
Fig. 48 The unbelted rear passenger is
thrown forwards, hitting the belted driver
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and safety ...
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In some countries, special safety standards and emissions-related
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Tires, Dismounting
Remove the valve insert.
Note
If equipped handle the glued-on wheel trim carefully.
Surface slightly scratched.
Replace the damaged rim wheel trim.
...
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