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Across
  1. 2. the resistance of any physical object to any change in its state of motion
  2. 5. the age of rock that is exact
  3. 8. the combination of all the forces that act on an object
  4. 9. a measure of the amount of matter in an object
  5. 10. greatness rank, position size or extent
  6. 11. the rate of a measure of the rate of motion
  7. 12. a collision in which the colliding objects become distorted and/or generate heat during the collision
  8. 17. the age of a fossil organisms, rocks, or geologic features or events defend relative of each other.
  9. 19. any influence that tends to accelerate on an object
  10. 22. mass collapsed so much density keeps everything from escaping
  11. 23. the force that acts to resist the relative motion of objects or materials that are in contact
  12. 24. an object resting on a horizontal surface
Down
  1. 1. the most famous and widely accepted models for the universes development
  2. 3. the product of the mass and the velocity of an object
  3. 4. the rate of speed of action or occurrence
  4. 6. different equations or problems put together to make another problem
  5. 7. a quantity that is completely specified by its magnitude and has no direction
  6. 12. product of force and time interval during which the force acts
  7. 13. collision in which colliding objects rebound without lasting deformation or heat generation
  8. 14. the rate of change if velocity with respect to time
  9. 15. converting a quantity expressed in one set of units into another
  10. 16. the force on a body due to gravity
  11. 18. a state of balance
  12. 20. the drop or come down freely under the influence of gravity
  13. 21. a quantity such as velocity completely specified by a magnitude and a direction