Rob Moore: Why Do Balls Bounce?
Скачать книгу (размер 116 Kb , формат fb2, страниц 24) Аннотация: A series of twenty non-fiction science readers which engages children in the world around them. What is gravity? Why don't skydivers fall off into space? Do heavy objects fall faster than light objects? You can find the answers to these and other questions about gravity in Why Do Balls Bounce?