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1c) Forces, movement & shape (types of force (Gravitational (this is…

- - - - Speed up
      - Slow down
      - change direction
      - change shape
- - - - Get five different sizes of sycamore seeds
      - . Roughly measure, and label them with, their surface area by multiplying the length by width
      - . Hold one at the top of a meter ruler
      - . Drop it and time how long it takes to reach the ground
      - . Repeat this three times for each of the five seeds
      - . Then plot a scatter graph with surface area on the y axis (mm/cm) and time on the x axis (s)
      - . You should find that the line of best fit is a diagonal line pointing away from 0, this represents a positive correlation meaning the larger the surface area the longer it took to fall
      - . This is because the larger seeds had more surface area to experience air resistance, this is a type of friction that opposes gravity, therefore slowing down the time taken for gravity to bring them to the ground.