Modern stair lifts can be found with a wide variety of features such as adjustable seat height, battery isolation switches, call stations, 'flip-up' rail, key switch, folding step, speed governor, seatbelt, soft start and soft stop.
Physics 1 Mechanics Overview. Mechanics is the branch of Physics dealing with the study of motion. No matter what your interest in science or engineering, mechanics will be important for you-motion is a fundamental idea in all of science. Mechanics can be divided into 2 areas-kinematics, dealing with describing motions, and dynamics, dealing with the causes of motion.
4. reaction - (mechanics) the equal and opposite force that is produced when any force is applied to a body; every action has an equal and opposite reaction. mechanics-the branch of physics concerned with the motion of bodies in a frame of reference.