Motion and Forces Definitions

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Across
  1. 6. A measure of how far something travels, ignoring direction
  2. 7. Quantities with magnitude but no direction
  3. 8. Motion caused only by gravity
  4. 12. Speed with a direction
  5. 16. Rule stating total momentum stays the same in a closed system
  6. 18. The name of the force that pulls objects toward Earth
  7. 19. A graph showing how an object’s position changes with time
  8. 20. Newton's law linking force, mass and acceleration
  9. 21. Newton's law stating objects stay still or move at constant speed unless a force acts
  10. 23. Motion where direction constantly changes but speed may stay the same
  11. 24. The time it takes a human to respond to something
Down
  1. 1. The straight‑line change from start to finish in a specific direction
  2. 2. Name given to the distance travelled during the driver’s reaction time
  3. 3. The single force that replaces all others acting on an object
  4. 4. A measure of how fast something travels — no direction needed
  5. 5. A graph used to find acceleration from its gradient
  6. 9. Rate of change of velocity
  7. 10. Force that acts towards the centre in circular motion
  8. 11. Name given to the distance calculated from the thinking distance plus the braking distance
  9. 12. Quantities with magnitude and direction
  10. 13. The unit used to measure force
  11. 14. Newton's law stating forces between objects are equal and opposite
  12. 15. Calculated by multiplying the mass and the velocity together
  13. 17. How difficult it is to change an object’s velocity
  14. 22. Name given to the distance travelled while the brakes are applied