Physics puzzle

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Across
  1. 2. contact magnetic force, gravitational and electric forces
  2. 6. increase in velocity
  3. 7. size usually a number
  4. 9. quantity with magnitude only
  5. 10. force caused by earths gravity
Down
  1. 1. rate of change distance
  2. 3. topic we are studying
  3. 4. quantity with size and direction
  4. 5. friction, drag, electric force and gravitational force
  5. 8. unit of force