The applet on Page 2 simulates a head-on collision between an incoming object and an object that is initially stationary. The collision can be viewed both in the laboratory frame of reference and the center-of-mass frame of reference.

The Help, ShowMe, and Lesson documents available under Related Items have the following functions:

Help - Explanation of the applet's functionality in point form.

ShowMe - Demonstration of the applet's features in the form of exercises.

Lesson - Lessons on qualitative and quantitative aspects related the applet.