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Skill 10 of 14
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Work-energy theorem

In every-day life we often have not too many types of energies involved.

  • Let go of a basketball, and gravity does work on it so it speeds up (and this work converts stored potential energy to kinetic).
  • Push on your friend on a bike to help him gain speed, and your pushing force does work on him in order to give him kinetic energy.
  • A spacecraft in space pushes forwards with its rocket engines, and this pushing force does work which speeds up the craft.

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References:

  1. Conservation of Energy. Readings on the Origins of the First Law of Thermodynamics. Part I’ (article), Jaime Wisniak, Scielo, Educación Química: Para Quitarle el Polvo, vol. 19, issue 2, 2008, www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S0187-893X2008000200013 (accessed Jun. 24th, 2020)
  2. Sears and Zemansky’s Univesity Physics with Modern Physics’ (book), Hugh D. Young & Roger A. Freedman, Pearson Education, 13th ed., 2012

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