Scince crossword

1234567891011121314151617181920
Across
  1. 2. every action has an equal and opposite reaction
  2. 7. change in motion
  3. 9. amount of matter in an object
  4. 10. unit of weight
  5. 14. unit of mass
  6. 17. F=G((m1xm2)/r^2)
  7. 18. the property of an object that resists changes in motion
  8. 19. the value of this on earth is 9.8m/s
  9. 20. force that resists motion
Down
  1. 1. an object at rest stays at rest and an object in motion stays in motion
  2. 3. a scientist, the unit of force is named after him
  3. 4. the maximum speed of an object
  4. 5. is represented by m/s and has direction
  5. 6. _________= force/mass
  6. 8. F=ma
  7. 11. ________= mass x velocity
  8. 12. a diagram that shows the different forces on an object
  9. 13. _____= mass x gravity
  10. 15. velocity is _______, so it has direction
  11. 16. m/s is used to represent this and this has no direction