Physics

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Across
  1. 4. A large rounded mass of rock on surface of the ground.
  2. 5. A force that tends to oppose.
  3. 6. To apply.
  4. 7. Reversed in nature,or effect.
  5. 9. Not important enough to be worth considering.
  6. 10. To push or drive quickly and forcibly.
Down
  1. 1. To identify by a symbol.
  2. 2. A small stone, especially one worn smooth by erosion.
  3. 3. Forming a relationship with other quantities.
  4. 8. To mark.