Download or read book Objects in Motion written by Paul Fleisher and published by Twenty-First Century Books. This book was released on 2001-08-01 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: Have you ever wondered why things drop to the ground instead of float or fly? Or how a heavy satellite can orbit Earth without crashing into it? From Copernicus and Kepler to Galileo and Newton, the scientific laws that show how and why things move are explored.