physics revision

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Across
  1. 2. the force relative to mass that attract towards it.
  2. 4. a thrust rising a object
  3. 8. the opposite of accelerating
  4. 11. an result of tow or more forces colliding
  5. 12. wen a object is moving
  6. 13. a force pushing foword
  7. 14. another word for uniform rate
  8. 16. a vector physical quantity
  9. 17. wen a force is going against another
Down
  1. 1. a point of change of balance in movement
  2. 3. force of a object when moving over another
  3. 5. a force exerted on a unit of surface
  4. 6. a scalar that represent the speed of a object
  5. 7. a quantity that has magnitude and direction
  6. 9. the quantity relative to mass and gravity measured in kg
  7. 10. a synonym of size
  8. 12. measured in newton
  9. 15. can be define as mass and motion