Collisions in a single dimension

Description

Gliders having different masses move horizontally an an air track providing for single dimentional motion. The gliders can collide with others. In the movie, a number of different situations are shown:
Identical gliders "glued" to each other with velcro patches after a collision.
Different gliders "glued" to each other with velcro patches after a collision.
Identical gliders colliding with elestic springs between them.
Different gliders colliding with elestic springs between them.
Gliders repelling each other due to magnets mounted on their tops.
Glider colliding with springs with putty on a spring leading to a partially elastic collision.