This applet features a theoretical Newton's cradle with five identical spheres free to move.[br][br]Drag the points below the spheres to determine the launch position of each sphere and then start the animation.
Comparison between a real Newton's cradle and its modeling in Geogebra
Presentation on how to model a simple Newton's Cradle (just one free sphere) in GeoGebra - the audio is in portuguese, but the video is subtitled