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Teaching kinetic energy as an observable quantity.

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Title: Teaching kinetic energy as an observable quantity.
Authors: Bruno Hartmann1 brunohartmannjr@gmail.com, Burkhard Priemer1
Source: Physics Education. Jul2019, Vol. 54 Issue 4, p1-1. 1p.
Subject Terms: Kinetic energy, Gravitational potential, Calorimeters
Abstract: In this paper we present a novel approach to teach kinetic energy as an observable and measurable concept. The fundamental principles have been outlined for gravitational potential energy in an earlier work, that we extend here. By accelerating or decelerating bodies with springs we begin, in a first step, with a direct comparison method for kinetic energies. A second step addresses the quantification of kinetic energy by introducing reference units. Third, we construct a mechanical calorimeter that generates these countable energy portions. And finally, in a fourth step, a quantitative description leads to the fundamental equation, that relates kinetic energy to velocity and mass. We highlight the concept by giving examples that were used and evaluated in high school physics classes. [ABSTRACT FROM AUTHOR]
Copyright of Physics Education is the property of IOP Publishing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Education Research Complete
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PubType: Academic Journal
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  Data: In this paper we present a novel approach to teach kinetic energy as an observable and measurable concept. The fundamental principles have been outlined for gravitational potential energy in an earlier work, that we extend here. By accelerating or decelerating bodies with springs we begin, in a first step, with a direct comparison method for kinetic energies. A second step addresses the quantification of kinetic energy by introducing reference units. Third, we construct a mechanical calorimeter that generates these countable energy portions. And finally, in a fourth step, a quantitative description leads to the fundamental equation, that relates kinetic energy to velocity and mass. We highlight the concept by giving examples that were used and evaluated in high school physics classes. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Physics Education is the property of IOP Publishing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1088/1361-6552/ab1353
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              Text: Jul2019
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