"Bill Nye shows how everything needs a push or pull--a force--to make it move or stop. Sometimes an object might seem to be at rest even when it is actually in motion. Confused? It's all relative--relative motion, that is."--Container.

Teacher's guide also available under Additional info tag. Originally an episode of the television program Bill Nye, the science guy ; Program in English and Spanish ; Grade level 4 and up ; "Disney presents."

1 DVD ; Special features include: fully indexed "chapters" correlated to National Science Standards ; interactive glossaries and quizzes ; bonus footage of never-before-seen segments, interviews, and demos ; on-disk implementation guide.