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Occupant Kinematic Accident
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Occupant kinematics, as it pertains to accident reconstruction, is aimed at explaining the motion of occupants inside a vehicle
during a crash.  Accident reconstruction experts utilize Newtonian laws of motion to explain the paths that vehicle occupants
follow and the method in which they react to external forces.  

Imagine the following scenario:

Two vehicles collide at an intersection. The driver of Unit #2 is wearing his seatbelt, while the driver of Unit #1 is not.  As Unit #1
and Unit #2 make first contact, Unit #1 and its driver share the same directional heading and speed. Likewise, Unit #2 and its
driver share a common heading and speed.
Occupant Kinematics Expert
Occupant Kinematics Expert
As the collision continues, the directional heading and speed of Unit #1 and Unit #2 are drastically altered. The driver of Unit #2
is held in his seat by his seatbelt.

The driver of Unit #1, however, is unbelted. When the vehicles redirect, the driver of Unit #1 has nothing to secure him in his
seat. His body continues in the direction and speed that it exhibited prior to the crash.

The driver of Unit #1, despite having started in the driver seat, strikes the passenger side windshield and dash, causing serious
personal injury.
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