Physics

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The front 1.20 m of a 1,350-kg car is designed as a "crumple zone" that collapses to absorb the shock of a collision.
(a) If a car traveling 22.0 m/s stops uniformly in 1.20 m, how long does the collision last?
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(b) What is the magnitude of the average force on the car?
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(c) What is the magnitude of the acceleration of the car? Express the acceleration as a multiple of the acceleration of gravity.
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