Google Classroom
GeoGebraGeoGebra Classroom

Push Me - Pull You

Two identical masses that are connected by a spring are at rest on a frictionless table. At t=0 one of the masses is given an initial velocity to the right. [you can explore the motions of each of the masses, and the center of mass by dragging the YELLOW dot - or you can animate the motion by clicking on the icon in the lower left hand corner.]