Due to the laws of motion the airbag causes force in the other direction while the person is moving forward, thus trying to equal out the force acting apon the person to make them stay in place.
It's not a mole, it's a gene flow.
This energy comes from the food we eat. Our bodies digest the food we eat by mixing it with fluids (acids and enzymes) in the stomach. When the stomach digests food, the carbohydrate (sugars and starches) in the food breaks down into another type of sugar, called glucose.