Unit 8 (Chapter 10 & 11) Potential Energy
Energy <ul><li>Energy is defined as the  ability to do work </li></ul><ul><ul><li>6 Types of energy </li></ul></ul><ul><ul...
Energy <ul><li>The units of energy are joules </li></ul><ul><li>joules are also the same unit as work! </li></ul><ul><li>(...
Potential Energy <ul><li>Is energy stored in an object  </li></ul><ul><li>due to its position </li></ul><ul><li>Potential ...
Potential Energy <ul><li>Gravitational potential energy depends on an objects mass and height </li></ul><ul><li>Objects wi...
Law of Conservation of Energy <ul><li>Energy can never be created or destroyed just turned into another form. </li></ul>
Law of Conservation of Energy <ul><li>When a ball flies through the air it does not lose energy even though it slows down ...
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02-08-08 - Potential Energy

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02-08-08 - Potential Energy

  1. 1. Unit 8 (Chapter 10 & 11) Potential Energy
  2. 2. Energy <ul><li>Energy is defined as the ability to do work </li></ul><ul><ul><li>6 Types of energy </li></ul></ul><ul><ul><ul><li>Kinetic Energy: associated with motion </li></ul></ul></ul><ul><ul><ul><li>Heat: associated with the speed of internal particles </li></ul></ul></ul><ul><ul><ul><li>Chemical: bonds atoms together </li></ul></ul></ul><ul><ul><ul><li>Electromagnetic: moving electric charges </li></ul></ul></ul><ul><ul><ul><li>Nuclear: in the atomic nucleus </li></ul></ul></ul><ul><ul><ul><li>Potential Energy: energy of position (energy at rest) </li></ul></ul></ul>
  3. 3. Energy <ul><li>The units of energy are joules </li></ul><ul><li>joules are also the same unit as work! </li></ul><ul><li>(How Confusing!) </li></ul><ul><li>You can think of energy as stored work – that is ready to be released! </li></ul><ul><li>Energy cannot be created or destroyed – only changed from one type of energy to another! </li></ul>
  4. 4. Potential Energy <ul><li>Is energy stored in an object </li></ul><ul><li>due to its position </li></ul><ul><li>Potential Energy is also </li></ul><ul><li>considered energy at rest </li></ul><ul><li>GPE = mass x acceleration due to gravity x height </li></ul>Potential Energy Potential Energy (joules) m - mass of object in kg g - acceleration of gravity in m/s 2 h - height of object, in m GPE – gravitational potential energy in J GPE = mgh
  5. 5. Potential Energy <ul><li>Gravitational potential energy depends on an objects mass and height </li></ul><ul><li>Objects with potential energy don’t use their energy until they start moving. </li></ul><ul><li>The further the object is from the ground the more potential energy it has </li></ul><ul><li>Chemical potential energy is energy stored in the form of chemical bonds. </li></ul>
  6. 6. Law of Conservation of Energy <ul><li>Energy can never be created or destroyed just turned into another form. </li></ul>
  7. 7. Law of Conservation of Energy <ul><li>When a ball flies through the air it does not lose energy even though it slows down and speeds up </li></ul><ul><li>The energy in the ball changes from kinetic to potential and then back to kinetic energy </li></ul>
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