Motion
"Newton’s laws of motion, relations between the forces acting on a body and the motion of the body, first formulated by English physicist and mathematician Sir Isaac Newton." (Britannica, 2017).
Newton's Laws
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Newton's First LawAn 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.
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Newton's Second LawNewton's second law of motion pertains to the behavior of objects for which all existing forces are not balanced. The second law states that the acceleration of an object is dependent upon two variables - the net force acting upon the object and the mass of the object.
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Newton's Third LawNewton's third law is: For every action, there is an equal and opposite reaction.
Newton's Law of Motion
TWIG. (n.d.). Newton's Law of Motion [Video file]. Retrieved from https://www-twig-world-com.db.plcscotch.wa.edu.au/film/factpack-hydrocarbons-1378/
NB: Video requires Google Chrome or Safari to view.
Biomechanics in Sport
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Physiopedia. (2018). Biomechanics In Sport. Retrieved from https://www.physio-pedia.com/Biomechanics_In_Sport
Mechanics is a branch of physics that is concerned with the description of motion/movement and how forces create motion/movement. In other words sport biomechanics is the science of explaining how and why the human body moves in the way that it does. In sport and exercise that definition is often extended to also consider the interaction between the performer and their equipment and environment.
Motion in Sport
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Benjamin, (2017). How Do the Laws of Motion Apply to Basketball? Retrieved from https://www.livestrong.com/article/80145-laws-motion-apply-basketball/
Isaac Newton's first law of motion states that an object at rest tends to stay at rest, while an object in motion tends to stay in motion unless an external force acts upon it. When a basketball player shoots, it would appear that there is nothing to obstruct the ball.
Newton's First Law and Car Safety
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The Physics Classroom. (2017). The car and the wall. Retrieved from http://www.physicsclassroom.com/mmedia/newtlaws/cci.cfm
According to Newton's first law, an object in motion continues in motion with the same speed and in the same direction unless acted upon by an unbalanced force. It is the natural tendency of objects to keep on doing what they're doing. All objects resist changes in their state of motion. In the absence of an unbalanced force, an object in motion will maintain its state of motion. This is often called the law of inertia.
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NRMA. (2017). The physics of staying safe on the road. Retrieved from https://www.mynrma.com.au/-/media/documents/motoring-education/study-guides/nrma-the-road-safety-total-learning-resource-years-9-10.pdf?la=en
The First Law of Motion means that objects that have greater momentum also have greater inertia. A stationary object will require a push or a pull to set it in motion. When the net force on an object is zero, its speed and direction of motion will remain unchanged. This is true for both stationary objects as well as those already in motion.
How do hydrofoils work?
Energy
Energy, in physics, the capacity for doing work. It may exist in potential, kinetic, thermal, electrical, chemical, nuclear, or other various forms. There are, moreover, heat and work—i.e., energy in the process of transfer from one body to another. After it has been transferred, energy is always designated according to its nature. Hence, heat transferred may become thermal energy, while work done may manifest itself in the form of mechanical energy. (Britannica, 2019)
Energy Transformation
TWIG. (n.d.). Energy transformation [Video File]. Retrieved from https://www-twig-world-com.db.plcscotch.wa.edu.au/film/energy-transformation-1517/
NB: Video requires Google Chrome or Safari to view.
Energy
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BBC Bitesize. (2016). What are forces? Retrieved from https://www.bbc.co.uk/education/guides/zttfyrd/revision/1
A force can be a push or a pull. For example, when you push open a door you have to apply a force to the door. You also have to apply a force to pull open a drawer.
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BBC Bitesize. (2017). Energy Transfer. Retrieved from https://www.bbc.co.uk/education/guides/zhhcwmn/revision/2
Different forms of energy can be transferred from one form to another. Energy transfer diagrams show each form of energy - whether it is stored or not - and the processes taking place as energy is transferred.
The energy transfer diagram below shows the useful energy transfer in a car engine. You can see that a car engine transfers chemical energy, which is stored in the fuel, into kinetic energy in the engine and wheels.
Brian Cox on Australia's Energy
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Emma, R. 2017, November 4). TV scientist offers out-there solution to Australia’s energy crisis. Retrieved from http://www.news.com.au/technology/science/tv-scientist-offers-outthere-solution-to-australias-energy-crisis/news-story/bfcd87aacbdde85e336e6943
The popular British astrophysicist, now touring Down Under, says cutting back on our energy use by turning off lights and air conditioning is not the answer. And neither is commissioning extra power plants.
Instead, he says we should move the production of energy away from Earth and into outer space, and our planet should become purely residential.
Renewable energy
TWIG. (n.d.). Renewable energy [Video file]. Retrieved from https://www-twig-world-com.db.plcscotch.wa.edu.au/film/glossary/renewable-energy-543/
NB: Video requires Google Chrome or Safari to view.
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Duff, R. (2012). Science of Wind Generation. Retrieved from https://renewableteacher.wordpress.com/the-science-behind-wind-generation/
Mr Duff is a science teacher who has created this website to help students learning Newton's Laws; including the theories and how they apply to renewable energy sources.