Explain how an airbag is designed to save your life in a car accident?

Airbags are designed to save your life by acting like a cushion for your head and neck when involved in an accident. If it wasnt there you would hit the steering wheel pretty hard and suffer from the effects. They are also harmful by throwing you back to the seat causing other pains in the back of your neck and head area, and can also cause suffercation if you are unable to move. Hope this helps a little!