Study of central and non-central collisions in billiard games

1st International Conference on Environmental Geography and Geography Education

生态环境科学;地球科学

Supriadi, B.^1 ; Lesmono, A.D.^1 ; Prastowo, S.H.B.^1 ; Prihandono, T.^1 ; Subiki^1 ; Ridlo, Z.R.^1 ; Rosyadi, F.A.^1

Department of Physics Education, University of Jember, Jember, Indonesia^1

关键词: Conservation of momentum;    External force;    Hole position;    Video analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/243/1/012022/pdf
DOI  :  10.1088/1755-1315/243/1/012022

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The purpose of the billiard games is to enter the object ball into the billiard table hole. If the hole position is aligned straight with the cue ball and object ball then the player can hit it centrally, but when the cue ball and object ball positions are not straight towards the hole then the player must hit the object ball in a non-central manner so that the ball object can bounce off by forming a certain angle and into the hole. The difference in object ball direction after the collision is an application of the collision concept that is a central collision and non-central collision. There has been a study of central and non-central collision reviews on billiard games to find out the validity of the law of conservation of momentum, coefficients of restitution (e) and disintegration energy (Q). The data in this study was obtained by using an application tracker video analysis. The result of this study shows that on central collision in the billiard game the law of conservation of momentum is not applicable, e ≤ 0,510 and Q = -0,00786 Joule. In the non-central collision, the law of conservation of momentum is not applicable, e ≤ 0,537 and Q = -0,00605 Joule. The central and non-central collision in billiard games does not apply the law of conservation of momentum because it is influenced by many factors including the limited accuracy of the tracker application and the effects of external forces.