Physical principle of frontal
collision
Both the vehicle and its occupants have energy
(kinetic energy), which depends on the speed of the
vehicle and the mass of its occupants. The greater the
speed and mass, the greater the amount of energy
released in a collision. Among these factors, the
vehicle’s speed plays a decisive role. For example,
when the vehicle’s speed increases from 25 Km/h to
50 Km/h, the kinetic energy released will increase
four times.
Passengers who are not wearing seat belts are not
integrated with the vehicle, so in a frontal collision,
the driver and passengers who are not wearing seat
belts still move forward at the speed before the
collision. The physical principles of collision
presented in this example apply not only to vehicle
frontal collision, but also to all other vehicle collision.
Consequences of driver and
passengers not wearing seat belts
Many people think that during a light vehicle
collision, they can use their hands to protect their
body and thus prevent injury. This is a
misunderstanding!
During a vehicle collision, inertia will continue to
propel all vehicle occupants not using seat belts,
forward at the pre-collision speed. However, at this
time, the vehicle will not continue to move with these
occupants. Therefore, any unsecured, unbelted
occupants may be seriously injured.
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