Topic 5 recap

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Across
  1. 4. the 'u' in the v2-u2=2as equation stands for the _ _ _ _ _ _ _ velocity
  2. 7. an object moves 2m away from a person then 2m back towards them - what is the displacement of the object?
  3. 9. if a line is curved and we want the gradient at a specific time we need to add an extra line to the graph, 'sitting' on the curve - what is this line called?
  4. 12. speed = distance divided by...
  5. 13. this type of 'gate' is used in the 'air track' required practical - it is connected to a datalogger
  6. 14. this is a single force which can replace all of the other forces acting, but have the same effect
  7. 15. the unit for energy
  8. 17. drinking alcohol, using a mobile phone or chatting to passengers can all increase a driver's _ _ _ _ _ _ _ _ distance
  9. 18. thinking distance + braking distance = _ _ _ _ _ _ _ _ distance
  10. 19. we can write this sign in front of the number to show that the object is moving towards us
  11. 20. you can calculate the distance travelled from a speed-time graph by working out the _ _ _ _ under the graph
Down
  1. 1. this type of physics quantity has magnitude and direction
  2. 2. to show how easy or difficult it is to stretch a spring we can look at the spring _ _ _ _ _ _ _ _ (it has the symbol 'k' in the formula)
  3. 3. this feature of a distance-time graph shows us the speed of the object
  4. 5. friction, air resistance and weight are all examples of this type of force
  5. 6. in a collision, the total momentum is...
  6. 8. in the Hooke's law required practical, you need to subtract the original length of the spring from the new length to calculate the ... of the spring
  7. 10. the unit for 'force'
  8. 11. the unit for mass
  9. 16. this has the unit kgm/s
  10. 18. this type of physics quantity only has magnitude (size)