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When would the car have the greatest and the least kinetic energy ?

When would the car have the greatest and the least kinetic energy ? When would it have the greatest and the least potential energy? If the potential energy at Y was 30,000 j and the Kinetic energy was 40,000 j, what is the mechanical energy of the cart?

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When would the car have the greatest and the least kinetic energy ?

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  1. When would the car have the greatest and the least kinetic energy? • When would it have the greatest and the least potential energy? • If the potential energy at Y was 30,000 j and the Kinetic energy was 40,000 j, what is the mechanical energy of the cart? • What do you think the potential and kinetic energy at points w and x would be based on your answer from #3? • What is mechanical energy?

  2. 1. What are the different type of energies?2. Explain what energy is associated with each picture3. Can you identify any energy transfers?

  3. Chemical Energy • The energy stored in atoms and compounds (potential energy) • Found in starch and sugar (food)- our bodies source of energy • Found in oil and gas- our homes and cars source of energy

  4. Electrical Energy • The energy of moving electrons • Used to do work • Example: electrical; energy does work on the stereo and the stereo produces sound

  5. Sound Energy • The energy of an object’s particles vibrating • Ex. Pluck a guitar, vibrate your vocal cords

  6. Light Energy • Produced by vibrations of electrically charged atoms. • Ex. Microwaves, lasers

  7. Nuclear Energy • The nucleus of an atom splits giving off energy • Used to generate electrical energy at nuclear power plants • Life would not be possible without the nuclear energy of the sun. • The sun is our most important energy resource

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