Aviation Machinist Mate (AD) Week 1 Practice Test

Motion is the act or process of changing place or position. In practice, you describe motion by comparing an object's position at one time to its position at another time, using a reference point such as the ground or runway. The rate of energy transfer is not motion—it’s power. A stationary state means there is no change in position within the chosen reference frame. The study of forces is dynamics, which looks at what causes motion rather than motion itself. In flight, you observe motion as the aircraft changes its location relative to the Earth over time, which is why motion centers on change in position.