In 1955, a soldier's parachute failed to deploy, causing him to fall 1200 feet from the plane to the ground. However, he managed to land in a snow bank, surviving the fall and suffering only minor injuries. Assuming the paratrooper weighed 100 kilograms, that he had reached terminal velocity of approximately 50 meters per second, and that the snow exerts an average force of 120,000 newtons, what minimum depth of snow, in meters to one decimal place, was necessary to stop him?