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Do Now!

Do Now!. Last lesson. Speed investigation. Today’s lesson. Interpreting distance-time and speed-time graphs. Distance against time graphs. distance. time. No movement?. distance. time. No movement. distance. time. Constant speed?. distance. time. Constant speed. distance. time.

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Do Now!

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  1. Do Now!

  2. Last lesson Speed investigation

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

  4. Distance against time graphs distance time

  5. No movement? distance time

  6. No movement distance time

  7. Constant speed? distance time

  8. Constant speed distance time

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

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

  11. Constant speed fast distance time

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

  13. Constant speed fast distance slow time

  14. Getting faster? (accelerating) distance time

  15. Getting faster distance time

  16. Examples distance time

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

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

  19. Speed against time graphs speed time

  20. No movement? speed time

  21. No movement speed time

  22. Constant speed? speed time

  23. Constant speed speed time

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

  25. Constant speed speed fast time

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

  27. Constant speed speed fast slow time

  28. Getting faster? (accelerating) speed time

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

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

  31. Example: speed time

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

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

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

  35. distance speed time time Be careful!

  36. distance speed time time No movement

  37. distance speed time time Constant speed Area = distance travelled

  38. distance speed time time Constant acceleration Area = distance travelled

  39. Questions!

  40. Balls!

  41. Investigating rolling balls! • Prediction • Table of results (Mass, circumference or diameter, Distance, time (measured several times), speed) • Suitable graph • Conclusion • Evaluation

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