Forces and Motion

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Across
  1. 2. When a force is applied to an object, this may change
  2. 4. the amount of matter in an object
  3. 7. Another word for friction when moving through a fluid
  4. 9. North and South ends of a magnet
  5. 11. the speed of an object when forces are balanced
  6. 12. When a force is applied to an object, this may change
  7. 13. Quantity calculated from speed multiplied by time
  8. 16. Force acting in the opposite direction to an object's motion
  9. 17. Push, pull or twist
  10. 18. Upwards force acting on an aeroplane in flight
  11. 19. Force on an object by a gas
  12. 20. Downwards force acting on an object due to Gravity
Down
  1. 1. Newton's law about equal and opposite forces
  2. 3. Equal to weight divided by mass
  3. 5. Quantity that has the units m/s
  4. 6. Newton's law - F=ma
  5. 8. The sum of all forces acting on an object
  6. 10. Created when all particles are removed from a region of space
  7. 14. Allegedly an apple fell on his head
  8. 15. Increasing in speed