Center-of-Mass and Relative Motion

Center of Mass

[M | t+ | —] 
Irregular lamina with marked center-of-mass tossed in air.

[In-Depth Description]

Irregular Lamina

Irregular lamina with marked center-of-mass tossed in air. (m) (T)

Air Track Center-of-Mass Motion

[L | t+ | —]
Push-me/pull-me gliders or pendulum glider on air track.

[In-Depth Description]

Air Table Center-of-Mass Motion

[L | t+ | —]
Coupled masses on air table.

[In-Depth Description]

Magic Marker Center-of-Mass Motion

[M | t+ | —]
Markers attached to an irregular lamina record the motion of various points, including the COM.

Relative Motion

[M | t+ | — ] 
A toy tractor, travelling straight across a moving mud slide, ends up traveling diagonally downstream.