VR8 Energy Crossword

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Across
  1. 1. is one force that causes KE to become lost
  2. 3. Type of system that is physically impossible on Earth
  3. 4. Energy Input x Energy Efficiency =______________
  4. 6. Total Energy - GPE = _______
  5. 8. Type of system that has a dotted line (energy in/out)
  6. 10. units for mass
  7. 13. collision where both KE and momentum are conserved
  8. 14. total momentum before will equal the total momentum__________.
  9. 15. means "move" in Latin
Down
  1. 2. collision where momentum is conserved but KE is dissipated
  2. 5. an example of a lost energy
  3. 7. energy based on height
  4. 9. relationship between mass and GPE
  5. 11. Output energy will always be _____ than input energy
  6. 12. what energy efficiency is measured in