What is the velocity of a truck on a 30% grade after a distance of .2 meters?
The velocity after a distance of .2 meters, not accounting for the coefficient of friction, is approximately 3 feet per second. Question: What is SAE J348 and what is its use. Answer: SAE J348 is a standard set by the Society of Automotive Engineers that predicts the potential of any one wheel chock given a worst case scenario.