Physics crossword

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Across
  1. 3. Speed with a direction
  2. 5. Vector quantity representing change in position
  3. 8. Scalar quantity representing the length of the path traveled
  4. 10. Quantity with both magnitude and direction
  5. 12. Product of force and displacement
  6. 16. Ratio of useful output to total input
  7. 19. Principle stating energy cannot be created or destroyed, only transformed
  8. 20. Scalar quantity representing the rate of motion
Down
  1. 1. The total force acting on an object after all forces are combined
  2. 2. Force exerted by gravity on an object
  3. 4. The size or extent of a quantity
  4. 6. Resistance of an object to change its state of motion
  5. 7. Amount of matter in an object
  6. 9. Movement of energy from one place or object to another
  7. 11. Rate of change of velocity
  8. 13. Push or pull acting upon an object
  9. 14. Capacity to do work
  10. 15. Quantity with only magnitude
  11. 17. transformation: Conversion of energy from one form to another
  12. 18. Interaction between two bodies where they exert forces on each other