Forces in concussion

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Across
  1. 5. forces in opposition to the relative motion of an object as it passes through the air
  2. 6. is the force that is transmitted through a string rope or cable
  3. 9. type of force that results when two interacting objects are touching
  4. 12. is a traumatic brain injury caused by a sudden blow or jolt to the head
  5. 13. is exerted by a sompressed or stretched spring
  6. 14. A push or pull
Down
  1. 1. pushes one part of a body in one direction and another part in the opposite direction
  2. 2. are not equal and always cause the object to chnge speed/direction
  3. 3. A contact force
  4. 4. creaters of this
  5. 7. is the force which the earth moon or other massive objects atract another object towards its self
  6. 8. will cause no ghange in the speed/direction of an object
  7. 10. the state of being stretched tight
  8. 11. is the force exerted by a surface as an object moves across it