science vocab crossword puzzle

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Across
  1. 2. A measure of how hard it is to stop a moving object.
  2. 3. Law that states that if the net force acting on an object is zero the motion of the object does not change.
  3. 8. A push or pull on one object by another object that is touching it.
  4. 9. The forces two objects apply to each other.
  5. 10. An attractive force that exists between all objects that have mass.
  6. 11. The amount of matter in an object.
  7. 13. The tendency of an object to resist a change in its motion.
  8. 14. A contact force that resists the sliding motion of two surfaces that are touching.
  9. 15. a force that one object applies to another object without touching it.
  10. 16. A principal stating the total momentum of a group of objects stays the same unless outside forces act up on the objects.
  11. 18. push or pull on an object.
Down
  1. 1. Law that states that for every action there is an equal and opposite reaction.
  2. 4. The gravitational force exerted on an object.
  3. 5. Forces acting up on an object that combine and form a net force of zero.
  4. 6. Law that states in an acceleration of an object is equal to the net force exerted on the object divided by the objects mass.
  5. 7. In circular motion, a force the acts perpendicular to the direction of motion, toward the center of the curve.
  6. 12. Any motion in wich an object is moving along a curved path.
  7. 17. The combination of all the forces acting on an object.