Motion: Physics and Seat Belts

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The scientific term of ‘motion’ is been one of the strangest phenomenon known in the history of physics. Since the end of the 17th century, the vast improvements in the technology and society have evolved the meaning of the word motion in terms of physics from ‘a simple movement’ to ‘a change in position, if acted upon by an unbalanced force’. In modern physics, motion is the change in position of an object with respect to its time and its reference point. Motion can be described as both scalar and vector quantity in relation to displacement, speed, direction, velocity, acceleration and time. If an object in not changing its position over time, then it is said to be in a stationary position. Every motion in the universe is explained through the laws of mechanics. The motion of all large scales such as movements in space, humans, and cells is known as the classical mechanism and motion of very small scale, such as in molecules and atoms is known as the quantum mechanics. In the 17th century, the three laws of motion were released after a scientist called Isaac Newton, who explained the modern definition of motion. These laws have now become known as the ‘Newton’s three laws’.
The three laws of motion can be used to describe the relationship between a body and the forces acting upon it. The first newtons law, also known as the law of inertia explains why an objects motion cannot change unless, it is acted upon by an unbalanced force. It is commonly stated as ‘An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force’. This portrays that an object has a natural tendency of doing what they are doing with the same speed and in the same...

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...014, http://ffden 2.phys.uaf.edu/211_fall2002.web.dir/Ben_Townsend/Collisionsandpeople.htm.
4. Valenzuela, M, ‘Death due to not wearing Seat Belt’, eHOW, viewed 23 March 2014, http://www.ehow.com/about_5347923_deaths-not-wearing-seat-belt.html.
5. ‘State of the Road’, CARRSQ, viewed 23 March 2014, http://www.carrsq.qut.edu.au/publications/corporate/seat_belts_fs.pdf.
6. ‘The truth about seat belts’, fiberpipe, viewed 22 March 2014, http://www.fiberpipe.net/~tiktin/Documents/Cover2.pdf.
7. ‘Seatbelts: getting them right’, Vic roads, viewed 22 March 2014, http://www.vicroads.vic.gov.au/Home/SafetyAndRules/SaferVehicles/BuyingASafeCar/SeatBelts.htm.
8. Williams, B, ‘Car Seat Belts’, e-zine articles, viewed 22 March 2014, http://ezinearticles.com/?Car-Seat-Belts&id=1058237.
9. ‘Motion’, the Physics Hypertext Book. Viewed 22 March 2014, http://physics.info/motion/.

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