Physics

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Across
  1. 4. rate of movement/motion
  2. 6. Sum of forces acting on an object
  3. 7. two forces of different strength
  4. 8. push or pull of an object
Down
  1. 1. two forces of the same strength
  2. 2. Speed of something with direction
  3. 3. when one object rubs against another
  4. 5. length between two positions