written by Wolfgang Christian

The Ejs Free Fall 3D model displays the three-dimensional dynamics of a ball dropped near the surface of Earth onto a platform.  The initial conditions for the ball are zero initial velocities in the x, y, and z directions.  The coefficient of restitution for the ball's collision with the platform is less than one.  The initial height of the ball can be changed by dragging it when the simulation is paused. You can modify this simulation if you have Ejs installed by right-clicking within the plot and selecting "Open Ejs Model" from the pop-up menu item.  

Ejs Free Fall 3D 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_newton_FreeFall3D.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 Ejs models for Newtonian mechanics are available.  They can be found by searching ComPADRE for Open Source Physics, OSP, or Ejs.

• Download ejs_mech_FreeFall3D.jar - 1824kb Java Archive File

Last Modified June 21, 2014

This file has previous versions.

Source Code for the Free Fall 3D model. This archive contains an XML representation of the EJS model. Unzip it in your EJS workspace to examine, compile, and run this model using Ejs.

• Download ejs_mech_newton_FreeFall3D.zip - 138kb Compressed File

Last Modified October 30, 2010

This file has previous versions.