AMERICAN INSTITUTE OF PHYSICS / SCIENCE PHOTO LIBRARY AMERICAN INSTITUTE OF PHYSICS / SCIENCE PHOTO LIBRARY
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Newton's projectile. Historical artwork of the trajectories of a projectile fired from a very high peak (V) on Earth (grey sphere). It is taken from Isaac Newton's 1687 Principia, his treatise on the laws of motion and gravitation. With this diagram, Newton (1642-1727) was demonstrating that a projectile would never hit the ground if it was launched from high in the Earth's atmosphere with enough initial speed. Instead, it would remain in orbit around the Earth, prevented from flying away by the force of gravity. THIS IMAGE MAY NOT BE USED TO STATE OR IMPLY THE ENDORSEMENT BY AIP OF ANY PRODUCT OR SERVICE.
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