Unfortunately, no one in this world can be completely immune to the dangers of life. However, it is in our power in advance to know how we must act when we are in an extreme situation. Indeed, timely action in such a situation could save both his own life and that of others.
First, it will be very difficult to jump, if you are in free fall. Second, your jump will slow down its fall occurs in the same amount, which is bad news for most people. Third, there is no way to predict what part of the body will land in, and consequently damage to your body jumping. The Discovery Channel guys have long shown that you should never do this: watch this video.
This is not a good idea, as a weight that your body is ten times descends on its legs in the fall. This could cause extremely serious injuries.
Once you feel that the car will fall, immediately they lie on the floor of the elevator on the back. In this position, the force of the shock is uniformly distributed over the surface of the body.
In this situation, the best thing to do, sitting on the floor of the elevator. In this position, the loading of the skeleton is less than if one were to. If there is very little space available, at least try to bend your knees, as this will help you reduce the impact force.
Based on materials from: nytimes