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owners manual Audi A5
owners manual Audi A5 - year of production: 2007 - Audi A5 owners manual EN
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from owners manual to the vehicle Audi A5, year of production 2007:
document_0900452a8179700c.book Seite 172 Donnerstag, 22. März 2007 10:19 10
172 Seat belts
What happens to passengers not wearing
seat belts?
Passengers not wearing seat belts risk fatal injuries in the
event of an accident.
Fig. 179 The vehicle
crashes against the
wall
The physical principles involved in a frontal collision are relatively
simple:
Both the moving vehicle and the passengers possess energy, which Fig. 180 A driver not
is known as “kinetic energy” ⇒ page 171, fig. 178. The amount of wearing a seat belt can
“kinetic energy” depends on the speed of the vehicle and the weight be thrown forwards
of the vehicle and passengers. The higher the speed and the greater
the weight, the more energy there is to be absorbed in an accident.
The most significant factor, however, is the speed of the vehicle. If
the speed doubles from 25 km/h to 50 km/h, for example, the kinetic
energy increases by a factor of four. Because these passengers are
not restrained by seat belts, the entire amount of kinetic energy has
to be absorbed at the point of impact ⇒ fig. 179. This would result
in serious or potentially fatal injury. Fig. 181 A rear
passenger not wearing
Even at urban speeds of 30 km/h to 50 km/h, the forces acting on the a seat belt can be
occupants in a collision can reach the equivalent of 1 ton (1000 kg) thrown forwards
or more. At greater speed these forces are even higher. A rule of
thumb: if the speed doubles, the forces increase by a factor of four.In a frontal collision, unbelted passengers will be thrown forwards
Passengers who do not wear seat belts are not “attached” to the and make violent contact with the steering wheel, dashboard, wind-
vehicle. In a frontal collision they will continue to move forward at screen, etc ⇒ fig. 180. Passengers not wearing their belts risk being
the speed their car was travelling just before the impact.thrown out of the car, resulting in potentially fatal injuries.
The common belief that occupants can brace their weight with their
hands in a minor collision is false. Even at low speeds the forces
acting on the body in a collision are so great that it is not possible
to hold yourself in the seat.
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Audi A5 owners manual
pages 171 - 177
Audi A5 owners manual
page 174 / 313
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