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written by
Tevian Dray
published by the Paradigms in Physics Program
This small group activity is designed to help upper division undergraduate students analyze a standard problem about colliding lumps of clay. Students work in small groups using relativistic kinematics and conservation laws to study the collision of lumps of clay. The whole class wrap-up discussion summarizes group findings, pointing out that mass is not conserved in special relativity.
This material is part of the Paradigms in Physics project at Oregon State University. This work promotes the use of active student learning in upper division physics courses. Both learning materials and learning strategies are provided to help both students and instructors.
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![]() <a href="https://psrc.aapt.org/items/detail.cfm?ID=13607">Dray, Tevian. Paradigms in Physics: Mass is not Conserved. Corvallis: Paradigms in Physics Program, August 23, 2013.</a>
![]() T. Dray, (Paradigms in Physics Program, Corvallis, 2008), WWW Document, (http://sites.science.oregonstate.edu/portfolioswiki/doku654e.html?id=activities:main&file=rfmass).
![]() T. Dray, Paradigms in Physics: Mass is not Conserved (Paradigms in Physics Program, Corvallis, 2008), <http://sites.science.oregonstate.edu/portfolioswiki/doku654e.html?id=activities:main&file=rfmass>.
![]() Dray, T. (2013, August 23). Paradigms in Physics: Mass is not Conserved. Retrieved February 10, 2025, from Paradigms in Physics Program: http://sites.science.oregonstate.edu/portfolioswiki/doku654e.html?id=activities:main&file=rfmass
![]() Dray, Tevian. Paradigms in Physics: Mass is not Conserved. Corvallis: Paradigms in Physics Program, August 23, 2013. http://sites.science.oregonstate.edu/portfolioswiki/doku654e.html?id=activities:main&file=rfmass (accessed 10 February 2025).
![]() Dray, Tevian. Paradigms in Physics: Mass is not Conserved. Corvallis: Paradigms in Physics Program, 2008. 23 Aug. 2013. 10 Feb. 2025 <http://sites.science.oregonstate.edu/portfolioswiki/doku654e.html?id=activities:main&file=rfmass>.
![]() @misc{
Author = "Tevian Dray",
Title = {Paradigms in Physics: Mass is not Conserved},
Publisher = {Paradigms in Physics Program},
Volume = {2025},
Number = {10 February 2025},
Month = {August 23, 2013},
Year = {2008}
}
![]() %A Tevian Dray %T Paradigms in Physics: Mass is not Conserved %D August 23, 2013 %I Paradigms in Physics Program %C Corvallis %U http://sites.science.oregonstate.edu/portfolioswiki/doku654e.html?id=activities:main&file=rfmass %O application/pdf ![]() %0 Electronic Source %A Dray, Tevian %D August 23, 2013 %T Paradigms in Physics: Mass is not Conserved %I Paradigms in Physics Program %V 2025 %N 10 February 2025 %8 August 23, 2013 %9 application/pdf %U http://sites.science.oregonstate.edu/portfolioswiki/doku654e.html?id=activities:main&file=rfmass Disclaimer: ComPADRE offers citation styles as a guide only. We cannot offer interpretations about citations as this is an automated procedure. Please refer to the style manuals in the Citation Source Information area for clarifications.
Citation Source Information
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