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Unformatted text preview: Chapter 9 Energy Work is of two kinds: first, altering the position of matter at or near the earth's surface relatively to other such matter; second, telling other people to do so. The first kind is unpleasant and ill paid; the second is pleasant and highly paid. ~ Bertrand Russell I read all of Chapter 9 A) True B) False Conservation of Energy s Total energy is conserved. But energy can and does change forms. What forms can it have? s Two major classes: Mechanical and Internal. Mechanical deals with the motion and position of l a r g e o b j e c t s . Internal deals with the motion and position of a t o m i c s i z e d o b j e c t s . Types of Mechanical Energy s Kinetic Energy = Energy from motion K. E. = mv 2 /2 A vehicle has more kinetic energy when it is m o r e m a s s i v e or m o v e s f a s t e r . You are walking down the sidewalk at 3 mph. You then start running at 6 mph. By how much did your kinetic energy increase?...
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This note was uploaded on 11/26/2011 for the course PHY S 100 taught by Professor Staff during the Winter '08 term at BYU.
- Winter '08