Two Balls’ Collision of Mass Ratio 3:1

• Yasuo Ogawara ^[2] ; Michael M. Hull ^[1]
  1. [1] Wayne State College

     Wayne State College

     Estados Unidos

     
  2. [2] Keio Senior High School
• Localización: The Physics Teacher, ISSN 0031-921X, Vol. 56, Nº. 4, 2018, págs. 222-223
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • Students will sometimes ask why momentum and kinetic energy concepts are both necessary. When physics teachers demonstrate situations that require both an understanding of kinetic energy and momentum, a favorite is Newton’s cradle, or a comparable demonstration of two balls of equal mass hitting each other. However, in addition to the case of two balls of equal mass, if a ball hits another ball of three times the mass with equal speed, the results are also interesting, and, like the equal-mass demonstration, both kinetic energy and momentum are critical for understanding the motion.