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Do Now!

Do Now!. Today’s lesson. Interpreting distance-time and speed-time graphs. A reminder. A reminder. Average speed = distance travelled time taken. d. t. S. x. Distance against time graphs. distance. time. Quietly and sensibly!. Let’s go on the corridor!.

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Do Now!

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  1. Do Now!

  2. Today’s lesson • Interpreting distance-time and speed-time graphs

  3. A reminder

  4. A reminder Average speed = distance travelled time taken d t S x

  5. Distance against time graphs distance time

  6. Quietly and sensibly! Let’s go on the corridor! You’ll need a pencil and your books

  7. Distance/time graph

  8. No movement? distance time

  9. No movement distance time

  10. Constant speed? distance time

  11. Constant speed distance time

  12. Constant speed distance The gradient of this graph gives the speed time

  13. Constant speed How would the graph look different for a faster constant speed (walking to Physics)? distance time

  14. Constant speed fast distance time

  15. Constant speed fast How would the graph look different for a slower constant speed (walking to French)? distance time

  16. Constant speed fast distance slow time

  17. Constant speed fast The gradient of the graph gives the speed distance slow time

  18. Constant speed distance Δy Gradient = Δy/Δx Δx time

  19. Quietly and sensibly! Let’s go on the corridor! You’ll need a pencil and your books

  20. Do now! Can you read what Mr Porter has written in your book and then finish the questions you did last lesson?

  21. Distance/time graph - acceleration

  22. Getting faster? (accelerating) distance time

  23. Getting faster (accelerating) distance time

  24. Examples distance time

  25. A car accelerating from stop and then hitting a wall distance time

  26. A car accelerating from stop and then hitting a wall Let’s try a simulation distance time

  27. Speed against time graphs speed time

  28. Speed against time graphs speed time

  29. No movement? speed time

  30. No movement speed time

  31. Constant speed? speed time

  32. Constant speed speed time

  33. Constant speed How would the graph look different for a faster constant speed? speed time

  34. Constant speed speed fast time

  35. Constant speed How would the graph look different for a slower constant speed? speed fast time

  36. Constant speed speed fast slow time

  37. Getting faster? (accelerating) speed time

  38. Getting faster? (accelerating) speed Constant acceleration time

  39. Getting faster? (accelerating) speed The gradient of this graph gives the acceleration time

  40. Getting faster? (accelerating) v The gradient of this graph gives the acceleration speed a = v – u t (v= final speed, u = initial speed) u time

  41. Getting faster? (accelerating) speed The area under the graph gives the distance travelled time

  42. Example: speed time

  43. A dog falling from a tall building (no air resistance) speed time

  44. A dog falling from a tall building (no air resistance) speed time

  45. A dog falling from a tall building (no air resistance) speed Area = height of building time

  46. distance speed time time Be careful!

  47. distance speed time time No movement

  48. distance speed time time Constant speed gradient = speed Area under graph = distance travelled

  49. distance speed time time Constant acceleration Gradient = acceleration = a = (v-u)/t Area under graph = distance travelled

  50. Reading – Pages 26 to 29

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