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written by Fu-Kwun Hwang and Wolfgang Christian
edited by Robert Mohr
The EJS Elastic Collision Model allows the user to simulate a two-dimensional elastic collision between hard disks. The user can modify the mass, position and velocity of each disk using sliders.  Both disks are draggable and the center of mass is shown as a cross in the simulation.

The Elastic Collision Model was created using the Easy Java Simulations (Ejs) modeling tool.  It is distributed as a ready-to-run (compiled) Java archive.  Double clicking the ejs_ntnu_mech_ElasticCollision.jar file will run the program if Java is installed.  Ejs is a part of the Open Source Physics Project and is designed to make it easier to access, modify, and generate computer models.  Additional Open Source Physics programs for quantum mechanics are available.  They can be found by searching ComPADRE for Open Source Physics, OSP, or EJS.

Please note that this resource requires at least version 1.5 of Java (JRE).
View the source code document attached to this resource
Subjects Levels Resource Types
Classical Mechanics
- Linear Momentum
= Collisions in Two Dimensions
= Conservation of Linear Momentum
= Impulse
- Lower Undergraduate
- High School
- Instructional Material
= Interactive Simulation
= Model
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- Learners
- Educators
- application/java
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Access Rights:
Free access
License:
This material is released under a GNU General Public License Version 3 license.
Rights Holder:
Fu-Kwun Huang and Wolfgang Christian
Record Creator:
Metadata instance created December 2, 2008 by Wolfgang Christian
Record Updated:
June 13, 2014 by Andreu Glasmann
Other Collections:

AAAS Benchmark Alignments (2008 Version)

4. The Physical Setting

4F. Motion
  • 9-12: 4F/H1. The change in motion (direction or speed) of an object is proportional to the applied force and inversely proportional to the mass.
  • 9-12: 4F/H4. Whenever one thing exerts a force on another, an equal amount of force is exerted back on it.

11. Common Themes

11B. Models
  • 6-8: 11B/M1. Models are often used to think about processes that happen too slowly, too quickly, or on too small a scale to observe directly. They are also used for processes that are too vast, too complex, or too dangerous to study.
ComPADRE is beta testing Citation Styles!

Record Link
AIP Format
F. Hwang and W. Christian, Computer Program TWO PARTICLE ELASTIC COLLISION MODEL (2008), WWW Document, (http://www.compadre.org/Repository/document/ServeFile.cfm?ID=8373&DocID=921).
AJP/PRST-PER
F. Hwang and W. Christian, Computer Program TWO PARTICLE ELASTIC COLLISION MODEL (2008), <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=8373&DocID=921>.
APA Format
Hwang, F., & Christian, W. (2008). Two Particle Elastic Collision Model [Computer software]. Retrieved October 1, 2014, from http://www.compadre.org/Repository/document/ServeFile.cfm?ID=8373&DocID=921
Chicago Format
Hwang, Fu-Kwun, and Wolfgang Christian. "Two Particle Elastic Collision Model." http://www.compadre.org/Repository/document/ServeFile.cfm?ID=8373&DocID=921 (accessed 1 October 2014).
MLA Format
Hwang, Fu-Kwun, and Wolfgang Christian. Two Particle Elastic Collision Model. Computer software. 2008. Java (JRE) 1.5. 1 Oct. 2014 <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=8373&DocID=921>.
BibTeX Export Format
@misc{ Author = "Fu-Kwun Hwang and Wolfgang Christian", Title = {Two Particle Elastic Collision Model}, Year = {2008} }
Refer Export Format

%A Fu-Kwun Hwang
%A Wolfgang Christian
%T Two Particle Elastic Collision Model
%E Robert Mohr, (ed)
%D 2008
%U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=8373&DocID=921
%O application/java

EndNote Export Format

%0 Computer Program
%A Hwang, Fu-Kwun
%A Christian, Wolfgang
%D 2008
%T Two Particle Elastic Collision Model
%E Mohr, Robert
%U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=8373&DocID=921


Disclaimer: ComPADRE offers citation styles as a guide only. We cannot offer interpretations about citations as this is an automated procedure. Please refer to the style manuals in the Citation Source Information area for clarifications.

Citation Source Information

The AIP Style presented is based on information from the AIP Style Manual.

The APA Style presented is based on information from APA Style.org: Electronic References.

The Chicago Style presented is based on information from Examples of Chicago-Style Documentation.

The MLA Style presented is based on information from the MLA FAQ.

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Two Particle Elastic Collision Model:

Is Based On Easy Java Simulations Modeling and Authoring Tool

The Easy Java Simulations Modeling and Authoring Tool is needed to explore the computational model used in the Two Particle Elastic Collision Model.

relation by Wolfgang Christian
Covers the Same Topic As One Dimensional Collision Model

This is a less advanced model of two objects colliding, in which the motion is confined to a single line.

relation by Caroline Hall
Is a Teaching Guide For Physics Classroom: Isolated Systems

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