Describe how a crumple zone on a car reduces injury to the driver in a crash.

During a crash the velocity of the car is reduced to zero. The deceleration of the car exerts a force on the driver causing injury. Without a crumple zone the change in velocity is instantaneous therefore a high deceleration and greater force. A crumple zone extends the time over which the car is decelerated leading to a lesser force.

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Answered by Thomas L. Physics tutor

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