hikmatiar, hamzarudin, Ishafit Ishafit, and Mentari Eka Wahyuni. 2019. “Determination The Coefficient of Restitution in Object As Temperature Function in Partially Elastic Collision Using Phyphox Application on Smartphone”. Science and Technology Indonesia 4 (4):88-93. https://doi.org/10.26554/sti.2019.4.4.88-93.