Open AccessDemonstration of a new collision phenomenon using air track
Author(s) -
N Imtinan,
I Rahmawati,
Harun Syamsudin Nur Hidayah,
S Linuwih,
M P Aji
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1918/2/022036
Subject(s) - collision , coefficient of restitution , track (disk drive) , collision response , computer science , inelastic collision , momentum (technical analysis) , kinetic energy , simulation , collision detection , physics , mechanics , classical mechanics , electron , nuclear physics , computer security , finance , economics , operating system
The touching collision between two objects on the air track still allows a change in the total kinetic energy. In this work, the air track props has been successfully modificated to demonstrate the collision without touching between two objects. The modificiation was done by adding thin cylindrical magnets to the two objects of air track set. This props demonstrates a very different Physics phenomenon from the collision between two objects touching each other. Analysis of total momentum of the two objects before and after collision show that the law of conservation of linear momentum is applied. The collision without touching between two objects produce an elastic collision and its coefficient of restitution e =0.99. The props of collision without touching was validated by the experts on physical aspect and pedagogical-concept. Based on the props physical aspect validation obtained a percentage of 95.6%. Based on the props pedagogical and conceptual aspect validation obtained a percentage of 91.6%. Besides, the results of the trial based on students responses got a percentage 90.65%. So, it can be concluded that the props of collision without touching is highly valid to be used as collision teaching props in class. The results of the development of this props are expected to provide a more comprehensive understanding and avoid students misconceptions for the collision material.