physics

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Across
  1. 5. force exerted by an object by gravity
  2. 8. amount of ground covered by an object
  3. 9. rate of distance covered by an object
  4. 11. the tendency of an object at rest to stay at rest and an object in motion to stay in motion
  5. 12. ratio of useful energy to total energy input
  6. 14. rate of change of a quantity represented by a slope
  7. 15. a state where an objects motion remains constant over time
  8. 16. the net effect of multiple forces acting on an object, represented as a single force
  9. 17. rate of change of displacement
  10. 18. energy stored in an object
Down
  1. 1. rate of change of velocity
  2. 2. The push or pull on an object with mass causes it to change its velocity
  3. 3. energy possessed by an object in motion
  4. 4. overall change in position of an object
  5. 6. force exerted by a planet or body that draws objects towards its centre
  6. 7. amount of matter in an object
  7. 10. capacity to do work
  8. 13. energy remains in an isolated system