Extensive collection of experiments illustrating fundamental principles of physics. Demonstrations on this disc: Motion in a Plane - shooter / dropper, monkey gun, vertical gun on car, vertical gun on accelerated car, air table parabolas, range gun, velocity vector addition, bulldozer on moving sheet ( 2D ), sliding weights with triangle, sailing upwind, local ve rtical with acceleration; Inertia - shifted air track inertia, inertia ball, foam rock, tablecloth jerk, eggs and pizza pan, pencil and plywood; Action and Reaction - reaction gliders, reaction gliders momentum conservation, car on rolling board, fan car with sail, CO₂ rocket, water rocket, fire extinguisher wagon, helicopter rotor, see-saw reaction carts. Kit contains: DVD with Englis h and Spanish audio tracks and subtitles, and bilingual study guide.