ERIC Number: EJ1173290
Record Type: Journal
Publication Date: 2018-Apr
Abstractor: As Provided
Two Balls' Collision of Mass Ratio 3:1
Ogawara, Yasuo; Hull, Michael M.
Physics Teacher, v56 n4 p222-223 Apr 2018
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.
Descriptors: Energy, Kinetics, Physics, Demonstrations (Educational), Science Instruction, Scientific Concepts
American Association of Physics Teachers. One Physics Ellipse, College Park, MD 20740. Tel: 301-209-3300; Fax: 301-209-0845; e-mail: email@example.com; Web site: http://aapt.scitation.org/journal/pte
Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A