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Unit 8 (Chapter 10 & 11) Work, Energy and Power
Work ,[object Object],[object Object],[object Object],[object Object]
Power ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Energy ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Energy ,[object Object],[object Object],[object Object],[object Object],[object Object]
Kinetic Energy ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Kinetic Energy Kinetic energy (joules) KE = ½  m v 2 m  -  mass of the object in   kg v  -  speed of the object in   m/s KE  -  the kinetic energy in   J
Kinetic Energy  depends on two things:  mass and speed The amount of kinetic energy the cart has is equal to  the amount of work you do to get the cart moving A cart at rest has NO  Kinetic energy Applying a force can give the cart speed, and therefore kinetic energy. Applying a greater force increases the speed and therefore the kinetic energy Increasing the mass also increases kinetic energy because it takes even more force to push.
Work-Energy Theorem the net work done on an object is equal to its change in kinetic energy

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02-06-08 - Energy-Kinetic Energy

  • 1. Unit 8 (Chapter 10 & 11) Work, Energy and Power
  • 2.
  • 3.
  • 4.
  • 5.
  • 6.
  • 7. Kinetic Energy depends on two things: mass and speed The amount of kinetic energy the cart has is equal to the amount of work you do to get the cart moving A cart at rest has NO Kinetic energy Applying a force can give the cart speed, and therefore kinetic energy. Applying a greater force increases the speed and therefore the kinetic energy Increasing the mass also increases kinetic energy because it takes even more force to push.
  • 8. Work-Energy Theorem the net work done on an object is equal to its change in kinetic energy