Physics

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Across
  1. 1. basic unit of matter
  2. 4. measured in watts
  3. 5. requires a medium to travel through
  4. 6. energy in action
  5. 9. where opposites attract
  6. 10. constant during a free fall
  7. 11. comes in kenetic and potential forms
Down
  1. 2. quantity of matter; not to be confused with weight
  2. 3. physics at tiny scales
  3. 4. tiny unit of matter or energy
  4. 7. measured in newtons
  5. 8. speed with direction