science vocabulary lesson,3

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Across
  1. 1. a contact force that resists the sliding of two surfaces that are touching
  2. 6. a push or pull on one object by another object that is touching it
  3. 8. forces acting on an object that combines and form a net force of zero
  4. 10. laws that stats that if the net force acting on an object does not change
  5. 13. a push or pull on an object
Down
  1. 2. law that states that the acceleration of an object is equal to the net force extended on an object divided by the objects mass
  2. 3. any motion in which an object is moving along a curved path
  3. 4. the amount of matter in an object
  4. 5. a force that one object applies to another object without touching it
  5. 7. the combination of all the forces acting on an object
  6. 9. an attractive force that exist between all objects that have mass
  7. 11. the gravitational force extended on an object
  8. 12. the tendency of an object to resets a change in its motion