Wow! If that did that to him after hitting him in the ass, just imagine what it would be like having that hit you in the face during a collision. Then imagine what would have happended if you did not have the airbag?? I would say that we are dealing with some very serious impact forces.
In reality, the airbag is not designed to hit you in the face, but to inflate during a collision, before you actually hit the air bag and you hit it after it is inflated...but the impact is still very violent and is why they don't like children sitting in the front seats equipted with airbags.
I recall and incident many years ago when air bags first started to be put in cars. A woman was involved in a small fender-bender that deployed her airbag. To insure that the airbag inflates fully and quickly, they are coated with a substance like talcum powder to act as a dry lubricant. The fire/rescue team arrived at the scene and saw the woman completely coated in this white powder, and they thought it might be a bia-hazard, so they hosed her down with the fire hoses, and then decontaminated her...:grin: as if she was coated with anthraxs or something. I realize they did not know what the powder was, but it was a funny story.
...Rich