Matter in Motion

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Across
  1. 3. A measure of the amount of matter in an object
  2. 5. When forces on an object produce a net force of greater than zero N.
  3. 7. Friction between non-moving surfaces
  4. 12. The combination of all of the forces acting on an object
  5. 15. The rate at which velocity changes over time
  6. 18. A force that opposes motion between two surfaces that are in contact
Down
  1. 1. When forces on an object produce a net force of 0 N.
  2. 2. Substance that reduces friction
  3. 4. Friction between moving surfaces
  4. 6. British scientist who wrote the laws of gravity
  5. 8. Equal to total distance divided by total time
  6. 9. The distance traveled divided by the time interval during which the motion occured
  7. 10. A force of attraction between objects that is due to their masses
  8. 11. A measure of the gravitational force exerted on an object
  9. 13. A push or a pull exerted on an object in order to change the motion of the object
  10. 14. the speed of an object in a particular direction
  11. 16. The SI unit for force
  12. 17. An object's change in position relative to a reference point