7. Stand on a platform taller than your height and use a personal fall arrest system with a 6-ft. What is the minimum safe working height to prevent you from contacting a lower level surface if you fall, with a lanyard and standard deceleration device? About 9.5 feet About 18.5 feet About 12 feet Somewhere between 9.5 feet and 12 feet. Need more information 8. Newton's second law of motion is represented by the equation f=ma (force = mass x acceleration) stating that gravity pulls an object (a falling worker) downward, and in the process, the object falls heavier, faster, and with greater force. The _____ in the equation represents force. gravity weight speed velocity momentum 9. All of the following are considered mobile scaffolds EXCEPT Aerial work lift Baker scaffold Scissor lift Supported frame scaffold with wheels All of the above are mobile scaffolds 10. According to OSHA, a fall plan is ___________? Required whenever workers may be exposed to fall hazards Required as part of a health and safety program (HASP) Provide fall protection training Required to document the impracticability of a conventional fall protection system All of the above