Science SPORE Prize
November 2011

The Open Source Physics Project is supported by NSF DUE-0442581.

## Computer Program Detail Page

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.

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
- High School
- Instructional Material
= Interactive Simulation
= Model
Intended Users Formats Ratings
- Learners
- Educators
- application/java
• Currently 0.0/5

Want to rate this material?

Access Rights:
Free access
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:
October 2, 2013 by Wolfgang Christian
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!

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 December 5, 2013, 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 5 December 2013).
MLA Format
Hwang, Fu-Kwun, and Wolfgang Christian. Two Particle Elastic Collision Model. Computer software. 2008. Java (JRE) 1.5. 5 Dec. 2013 <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
%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

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.

This resource is stored in 16 shared folders.

You must login to access shared folders.

### 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
Is a Teaching Guide For Physics Classroom: Isolated Systems

Know of another related resource? Login to relate this resource to it.
Save to my folders

### Related Materials

Is Based On Is a Teaching Guide For Is a Teaching Guide For

The OSP Network: