Motion and Newton's Laws

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Across
  1. 4. Falling without air resistance
  2. 6. To every action force there is one
  3. 8. explanation of an observed phenomenon
  4. 9. prefix 1 millionth
  5. 10. prefix equals 1,000
  6. 11. Parallel to surface, roughness
  7. 12. prefix 1 million
  8. 15. Rate of change of velocity
  9. 18. prefix 1/1000
  10. 19. Motion of object in a parabola
  11. 20. Force perpendicular to surface
Down
  1. 1. SI unit of length
  2. 2. Force due to Earth's pull
  3. 3. prefix equals 1/100
  4. 5. Opposition to motion in air
  5. 7. The net force is zero
  6. 13. Displacement per unit time
  7. 14. Newton's 1st law
  8. 16. unit of force
  9. 17. How fast an object moves