SUPERSTRINGS AND OTHER THINGS 3 THE LAWS OF MECHANICS NEWTON'S LAWS OF MOTION The concept of force The ancient idea of motion The birth of modern science Pioneers of physics: Galileo's dialog with aristotle Galileo formulates the law of Inertia Physics in our world: The Leaning Tower of pisa Newton's First Law: Law of inertia Physics in our world: Car seat belt ewton's Second Law: Law of force Newton's Third Law: Law of action and reaction 4 ENERGY What is energy? The concept of work 3457802569222667 Units of work and energy The concept of energy Pioneers of Physics: James Prescott Joule(1818-1889) The work-energy theorem Conservative and nonconservative forces 5 CONSERVATION OF ENERGY AND MOMENTUM Transformation of energy The principle of conservation of energy The energy of mass Efficiency pioneers of physics: The phnysicists'letters Power Physics in our world: Automobile efficiency Impulse and momentum Physics in our world: Air bags Conservation of momentum 888888888999 Elastic and inelastic collisions Cannons and rockets 6 ROTATION AND THE UNIVERSAL LAW OF GRAVITATION Rotational motion The frontiers of physics: CD-ROM drives 91m Torque and angular momentum7   / <
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