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Uniform decceleration: Calculate distance of design to collapse car in a crash

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"A person who is properly constrained by an over-the-shoulder seat belt has a good chance of surviving a car collision if the decceleration does not exceed 26.0 G's (1.00 G = 9.8 m/s^2). Assuming uniform decceleration of this value, calculate the distance over which the front end of the car must be designed to collapse if a crash brings the car to rest from 101 km/h."

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