Motion

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Across
  1. 2. a bodys relative mass
  2. 6. a tendency to do nothing
  3. 7. a rapidity of movement or action
  4. 9. continued progress of something in a given direction
  5. 10. a vehicles capacity to gain speed
  6. 11. an inclined part of a road or railway
Down
  1. 1. moving something from its place
  2. 2. activity involving mental or physical effort
  3. 3. a large body pf matter with no definite shape
  4. 4. decrease in speed
  5. 5. length of space between 2 points
  6. 8. strength or energy as an attribute of physical action