Consider a large truck carrying a large load of steel beams in the truck bed. The worst case scenario for the driver is for the steel beams to slide from the truck bed forward and crush the truck cab and the drive when truck needs to suddenly stop. Assume that the steel load of 10,000 kg and a 20,000 kg flatbed truck traveling at 20 m/s. The steel beams are not tied down and have a coefficient of static friction of 0.500 with the bed of the truck. Determine the maximum stopping acceleration that will not cause the steel beams to move relative to the truck bed. (4.9 m/s^2)