Physics

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Across
  1. 2. motion resistance from objects rubbing against each other
  2. 4. a rule in algebra or other branches of mathematics expressed by symbols or formulae
  3. 5. a unit used to measure electrical energy
  4. 8. minimum energy needed for any object to be attracted to each other
  5. 9. when two objects collide
Down
  1. 1. measurement of magnitude
  2. 3. rate and direction of motion measurement
  3. 6. wave height from the center of the wave
  4. 7. how mass in motion is measured
  5. 10. change in momentum