The Insane Physics of Airbags

I can imagine the meeting: A dozen engineers are gathered around a conference table to discuss automobile safety. How can we protect people during a car crash? We have already added seat belts and crumple zones to cars. Is there anything else we can include? One attendee reluctantly raises their hand with a suggestion: "How about we add an explosive in the steering wheel?" Brilliant. That's exactly what we will do. We will put a bomb in the car and it will save lives. They were right.

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