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Energy

Energy. Transformations. In the world around you, energy is transforming continually between one form and another. Energy Transformations. As the mountain biker pedals, his leg muscles transform chemical energy into kinetic energy. More energy transformations….

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Energy

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  1. Energy Transformations

  2. In the world around you, energy is transforming continually between one form and another.

  3. Energy Transformations • As the mountain biker pedals, his leg muscles transform chemical energy into kinetic energy.

  4. More energy transformations…. • Some of this energy transforms into _________ energy as he moves up the hill.

  5. Potential energy is converted into kinetic energy. • Before the yo-yo begins its fall it has stored energy due to its position. At the top, it has its maximum ________energy. • At the bottom, its potential energy has been converted into kinetic energy so that it now has its maximum ________energy.

  6. Mechanical Energy • This is a combination of potential energy and kinetic energy.

  7. Work • Work = force x distance (the use of force to move and object over a distance. • Problem:A fork lift moves 34m carrying a 1023N box across the warehouse floor. How much work is done by the fork lift.

  8. Power • Power = work/time (how much work is done over a period of time).

  9. Warm-up • Describe in your own words, kinetic, potential, and mechanical energy. Draw a picture of a roller coaster and explain where the roller coaster has the most kinetic energy and the most potential energy.

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