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Peer reviewedGalli, John Ronald – Physics Teacher, 1995
Presents a mechanical model that is able to duplicate the torque-free twist of a real cat. Discusses results of experiments that analyze its free fall from an inverted position. (JRH)
Descriptors: Conservation (Concept), Higher Education, Mechanics (Physics), Physics
Peer reviewedZheng, T. F.; And Others – Physics Teacher, 1995
Applies the concepts of kinematics and conservation of mechanical energy to calculate the time needed to reach a certain point along semicircular and parabolic paths. Presents numerical calculations for the critical speed thresholds for the paths of semicircular and parabolic curves. (JRH)
Descriptors: Conservation (Concept), Gravity (Physics), Higher Education, Mechanics (Physics)
Peer reviewedMancuso, Richard V.; Long, Kevin R. – Physics Teacher, 1995
Presents the Astro-Blaster as a method of the laws of conservation of momentum and energy during the creation of a supernova. Several elastic balls are aligned for a drop, followed by multiple collisions which result in the top ball reaching tremendous heights relative to the drop height. (JRH)
Descriptors: Astronomy, Conservation (Concept), Elementary Secondary Education, Energy
