The air bag is designed to inflate very quickly and

The air bag is designed to inflate very quickly and to subsequently yield if the driver hits it. A collision uniformly stops a car from 30. mph to 0.0 and then triggers the air bag. The driver is not seat belted and so hits the inflated air bag. This acts as a local crumple zone and consequently compresses by 0.20 meters as his head is brought to rest. According to the Gadd Severity Index, will the driver suffer serious injury? Assume constant deceleration of the driver’s head after hitting the air bag.

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