That means it rotates at an average velocity of 1.9 kilometres per second. However, one thing that the Sun doesn't do is to move 'across the sky' from east to west each day. That is an illusion caused by the Earth rotating on its own axis every 23 hours, 26 minutes and 4 seconds.
Proper Body Mechanics for Nurses. Nursing is a job that needs a lot of bending our backs, flexing our arms and legs and pushing and pulling patients. Because of this, many nurses are at risk for developing physical strain and back injuries or even fractures. One way to prevent these from happening is to practice proper body mechanics. Definition. Body mechanics is a broad term used to denote an effort coordinated by the muscles, bones and nervous system. It can either be good or bad and can be directly related to the occurrence of back pains. Rules
body mechanics. n. The application of kinesiology to the use of proper body movement in daily activities, to the prevention and correction of problems associated with posture, and to the enhancement of coordination and endurance.