Final answer:
Whiplash is a common injury when a vehicle is hit from behind, caused by rapid head motion relative to the body.
Explanation:
Whiplash is a common injury for vehicle occupants, especially when the vehicle is hit from behind. This injury occurs due to the rapid forward-back motion of the head relative to the body, leading to strain on the neck ligaments.
The anterior longitudinal ligament helps resist excess backward bending of the vertebral column, crucial in preventing whiplash. Installation of seat headrests has reduced the frequency of whiplash injuries in rear-end collisions.
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