The scientific term "motion" is one of the strangest phenomena known in the history of physics. Since the end of the 17th century, considerable advances in technology and society have changed the meaning of the word movement in terms of physics, from "a simple movement" to "a change of position, if caused by an unbalanced force. In modern physics, motion is the change in position of an object relative to its time and reference point. Motion can be described as both a scalar and vector quantity relating to displacement, velocity, direction, velocity, acceleration, and time. If an object does not change its position over time, it is said to be in a stationary position. Every movement in the universe is explained by the laws of mechanics. Large scale motion, such as movements in space, humans and cells, is known as classical mechanism and very small scale motion, such as in molecules and atoms, is known as quantum mechanics. In the 17th century, the three laws of motion were published thanks to a scientist called Isaac Newton, who explained the modern definition of motion. These laws are now known as “Newton’s Three Laws.” The three laws of motion can be used to describe the relationship between a body and the forces acting on it. Newton's first law, also known as the law of inertia, explains why the motion of an object cannot change unless it is acted upon by an unbalanced force. It is commonly said: “An object at rest remains at rest and an object in motion remains in motion at the same speed and in the same direction unless it is subjected to an unbalanced force.” This shows that an object has a natural tendency to do what it does with the same speed and in the same...... middle of paper ......014, http://ffden 2.phys .uaf.edu/211_fall2002.web.dir/Ben_Townsend/Collisionsandpeople.htm.4. Valenzuela, M, “Deaths from Not Wearing a Seat Belt,” eHOW, accessed March 23, 2014, http://www.ehow.com/about_5347923_deaths-not-wearing-seat-belt.html.5. “State of the Road”, CARRSQ, accessed March 23, 2014, http://www.carrsq.qut.edu.au/publications/corporate/seat_belts_fs.pdf.6. “The Truth About Seat Belts,” fiberpipe, accessed March 22, 2014, http://www.fiberpipe.net/~tiktin/Documents/Cover2.pdf.7. “Seat Belts: Getting Them Right,” Vic Roads, accessed March 22, 2014, http://www.vicroads.vic.gov.au/Home/SafetyAndRules/SaferVehicles/BuyingASafeCar/SeatBelts.htm.8. Williams, B, “Car Seat Belts,” e-magazine articles, accessed March 22, 2014, http://ezinearticles.com/?Car-Seat-Belts&id=1058237.9. “Motion”, the physics hypertext book. Accessed March 22, 2014, http://physics.info/motion/.