Energy

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Across
  1. 2. the SI unit of work or energy
  2. 3. (of an object or material) able to resume its normal shape spontaneously after being stretched or compressed.
  3. 5. of or relating to or caused by gravitation
  4. 6. the ratio of the useful work performed by a machine or in a process to the total energy expended or heat taken in.
  5. 7. supply with mechanical or electrical energy.
  6. 10. relating to or resulting from motion
Down
  1. 1. having or showing the capacity to develop into something in the future
  2. 4. energy, mass, linear or angular momentum remains constant in a system which is not subject to external influence.
  3. 8. activity involving mental or physical effort done in order to achieve a result.
  4. 9. power derived from the utilization of physical or chemical resources, especially to provide light and heat or to work machines.