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ERIC Number: EJ859371
Record Type: Journal
Publication Date: 2009-Oct
Pages: 2
Abstractor: As Provided
ISSN: ISSN-0031-921X
Non-Zero Net Force and Constant Velocity: A Study in Mazur's Peer Instruction
Newburgh, Ronald
Physics Teacher, v47 n7 p444-445 Oct 2009
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.
American Association of Physics Teachers. One Physics Ellipse, College Park, MD 20740. Tel: 301-209-3300; Fax: 301-209-0845; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: Teachers
Language: English
Sponsor: N/A
Authoring Institution: N/A