04 Energy, work, power

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Across
  1. 3. capacity to do work
  2. 4. when speed is doubled, KE of a body becomes __ times larger
  3. 5. energy a body possesses due to its motion
  4. 7. potential energy a body possesses due to its position relative to the ground
  5. 9. no work is done if a body moves __ to the force applied
  6. 11. a common cause of energy loss
  7. 12. energy changes from one __ to another
  8. 13. unit of power
  9. 14. rate of doing work
  10. 15. you can write __ equation before writing formula for energy changes
Down
  1. 1. work has unit of __
  2. 2. principle of __ of energy
  3. 3. ratio of useful energy output to total energy input of a system
  4. 6. GPE __ as a body falls
  5. 8. __ work is done if a body does not move
  6. 10. energy cannot be __ or destroyed