Work/Potential Energy

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Across
  1. 3. done on a system by forces from outside the system
  2. 5. type of potential energy, aka spring
  3. 7. the larger the _____, the greater the work done
  4. 8. depends only on the height of an object
  5. 10. interaction forces that can store useful energy (two words)
Down
  1. 1. friction, usually (two words)
  2. 2. the unit of all forms of energy
  3. 4. energy that has the ____ to be converted into other forms. of energy(two words)
  4. 6. type of potential energy, aka elastic
  5. 9. determines the sign of "W" between the force and displacement