Extensive collection of experiments illustrating fundamental principles of physics. Demonstrations on this disc: Collisions - colliding balls, equal and unequal mass collisions, elastic and inelastic collisions, coefficient of restitution, high bounce, equal mass air table collisions, unequal mass air table collisions, inelastic air table collisions, egg in sheet, pile driver with foam rubber, ballistic pendulum; Rotational Kinematics - radian disc, cycloid generator, circle with gap, rotating disc with erasers, spinning disc with water, ball on cord, coin on a coat hanger, plane on string, roundup, whirling bucket of water, centrifuge hoops, water and mercury ce ntrifuge, spinning chain, rotating rubber wheel, centrifugal generator. Kit contains: DVD with English and Spanish audio tracks and subtitles, and bilingual study guide.