Newtons first law of motion

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Across
  1. 6. the combination of all the forces acting on an object
  2. 7. what mass is measured by
  3. 10. the tendency of an object to resist a change in its motion
  4. 11. friction between a surface and a fluid or air.
  5. 15. if the net force on an object is zero, the motion of the object does not change.
  6. 16. forces acting on an object that combine and form a net force of zero
Down
  1. 1. a force that one can apply without touching
  2. 2. a force that resists the motion of two surfaces that are touching.
  3. 3. the gravitational force exerted on an object
  4. 4. forces acting on an object that combine and form a net force that is not zero
  5. 5. the amount of matter in an object
  6. 8. reduces friction by creating separation between two surfaces
  7. 9. a push or a pull on an object
  8. 12. an attractive force between all objects that have mass
  9. 13. what force is measured in
  10. 14. a push or a pull by two objects that are touching