Which is a safer car bumper in a collision: one that is flexible and retracts or one that is rigid? why? which is a safer car bumper in a collision: one that is flexible and retracts or one that is rigid? why? the retractable bumper, because softer things withstand collisions better. the rigid bumper, because it does not change shape so easily. the retractable bumper, because it extends the time interval of the collision, thus reducing the force exerted on the car.
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Which is a safer car bumper in a collision: one that is flexible and retracts or one that is rigid?...
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