Subdisciplines of mechanics include. 1  Statics, the study of non-moving bodies under known loads, how forces affect static bodies. 2  Dynamics the study of how forces affect moving bodies. Dynamics includes kinematics (about movement, velocity, and acceleration) and kinetics (about forces and resulting accelerations).
1 Researchers studied a group of men that typically walk approximately 10,000 steps per day (as measured by a pedometer) and asked them to reduce their steps to only 1,350 per day. 2  This meant taking elevators instead of stairs, driving to work and lunch.
Studies found that the average American adult only makes it about halfway to a goal of 10,000 steps per day, although those who wear an activity monitor or pedometer seem to log more steps per day. If you walk between 5,000 and 7,000 steps per day, you are an average American. However, this is a case where it definitely pays to be above average. At 5,000 steps per day, it is unlikely you are getting the amount of exercise recommended to reduce health risks.