Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Potential and Kinetic Energy
Document related concepts
Grid energy storage wikipedia , lookup
Fuel efficiency wikipedia , lookup
100% renewable energy wikipedia , lookup
Public schemes for energy efficient refurbishment wikipedia , lookup
Low-Income Home Energy Assistance Program wikipedia , lookup
Energy subsidies wikipedia , lookup
Energy Charter Treaty wikipedia , lookup
Zero-energy building wikipedia , lookup
Energy storage wikipedia , lookup
World energy consumption wikipedia , lookup
Potential energy wikipedia , lookup
International Energy Agency wikipedia , lookup
Energy returned on energy invested wikipedia , lookup
Kinetic energy wikipedia , lookup
Low-carbon economy wikipedia , lookup
Energy harvesting wikipedia , lookup
Alternative energy wikipedia , lookup
Regenerative brake wikipedia , lookup
Internal energy wikipedia , lookup
Energy policy of the United Kingdom wikipedia , lookup
Distributed generation wikipedia , lookup
Energy policy of Finland wikipedia , lookup
Life-cycle greenhouse-gas emissions of energy sources wikipedia , lookup
Energy policy of the European Union wikipedia , lookup
Negawatt power wikipedia , lookup
Energy efficiency in transport wikipedia , lookup
Conservation of energy wikipedia , lookup
United States energy law wikipedia , lookup
Energy in the United Kingdom wikipedia , lookup
Energy Independence and Security Act of 2007 wikipedia , lookup
Transcript
Potential and Kinetic Energy What is energy?! • Capacity to do work • Measured in joules (J) Potential Energy • Energy stored in an object – Dependent upon: • Position – top of a hill vs bottom of a hill • Shape - stretched rubber band, compressed spring • Condition – old battery vs new battery • Commonly used as fuel to “run” things • Ex: batteries, gasoline/fuel, food, object at the top of a hill, acorn hanging on a tree, etc. Types of PE • • • • Chemical (food, gasoline, other fuels) Nuclear (fission, fusion) Gravitational (one object above another) Stored mechanical (elastic PE) Kinetic Energy • Energy of an object due to its motion. – Dependent upon: • Mass – bowling ball vs a marble • Speed – car traveling at 75mph vs 25 mph • Ex: person running, Frisbee flying, baseball moving through air, car traveling down road Forms of KE • Sound – travels in waves, must have something to travel through • Radiant – travels in waves, doesn’t have to have a medium • Electrical – when e- move (lightning, electricity) Law of Conservation of Energy Energy can be neither created, not destroyed BUT can change from one form to another. (Amount of energy in a system remains constant!) KE can change to PE, or vice versa! Energy can be transferred as work and heat thermodynamics
