Impulse-Momentum Diagrams

• Autores: David Rosengrant
• Localización: The Physics Teacher, ISSN 0031-921X, Vol. 49, Nº. 1, 2011, págs. 36-39
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • Multiple representations are a valuable tool to help students learn and understand physics concepts.1Furthermore, representations help students learn how to think and act like real scientists.2These representations include: pictures, freebody diagrams,3energy bar charts,4electrical circuits, and, more recently, computer simulations and animations.5However, instructors have limited choices when they want to help their students understand impulse and momentum. One of the only available options is the impulsemomentum bar chart.6The bar charts can effectively show the magnitude of the momentum as well as help students understand conservation of momentum, but they do not easily show the actual direction. This paper highlights a new representation instructors can use to help their students with momentum and impulse�the impulsemomentum diagram IMD.