Non-Zero Net Force and Constant Velocity: A Study in Mazur's Peer Instruction

A problem addressed infrequently in beginning physics courses is that of a moving body with changing mass. Elementary texts often have footnotes referring to jet planes and rockets but rarely do they go further. This omission is understandable because calculations with variable mass generally requir...

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Veröffentlicht in:	The Physics teacher 2009-10, Vol.47 (7), p.444-445
1. Verfasser:	Newburgh, Ronald
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Sprache:	eng
Schlagworte:	Calculus Computation Peer Teaching Physics Problem Solving Science Instruction Scientific Principles Student Participation
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description	A problem addressed infrequently in beginning physics courses is that of a moving body with changing mass. Elementary texts often have footnotes referring to jet planes and rockets but rarely do they go further. This omission is understandable because calculations with variable mass generally require the tools of calculus. This paper presents a changing mass problem that can be treated on an elementary level, thereby leading to an understanding of the role of changing mass on Newton's second law. It also illustrates Mazur's technique of Peer Instruction, a technique that demands active student participation.
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subjects	Calculus Computation Peer Teaching Physics Problem Solving Science Instruction Scientific Principles Student Participation
title	Non-Zero Net Force and Constant Velocity: A Study in Mazur's Peer Instruction
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