What effect does extending the time of impact have during a crash?

Extending the time of impact during a crash is crucial for enhancing the safety of vehicle occupants. When the time of impact is increased, the forces involved in the crash are distributed over a longer period. This reduction in the rate at which the force is applied results in a decrease in the overall force absorbed by both the vehicle structure and the occupants.

In essence, the human body can withstand a certain amount of force over time, and by allowing that force to be applied more gradually, the risk of injury is significantly reduced. This principle is why modern vehicles are designed with crumple zones, airbags, and other safety features that are intended to extend the duration of impact and help manage the forces involved during collisions. Consequently, extending the time of impact is a critical factor in improving occupant safety in crashes.