In a situation like this, survival would largely depend on factors such as the distance between you and the falling truck, your reaction time, and your ability to quickly move out of the way. Assuming it takes around 2 seconds for the truck to fall from that height due to gravity, you would have to react and move out of the way in less than 2 seconds. As an athletic person with an average reaction time (around 0.25 seconds), there is a possibility that you might be able to move to a safe area before the truck falls, especially if you're not directly beneath it. However, this also depends on how quickly you recognize the danger and take action. It is essential to always be aware of your surroundings and act quickly in emergency situations.