I'm Etalie, I'm currently studying for my AS levels and will (hopefully) be posting revision entries on psychology and sociology.
I previously uploaded posts on GCSE revision. If it helps you then great! But I'm not an expert on anything AT ALL so don't rely on everything I post.
(Also, I'm not taking credit for any of the pictures or info here, it's all off google images, notes from BBC bitesize and CGP revision guides, textbooks etc)

(NB - GCSE: italics in the science subjects are things that are only in paper 2!)

Tuesday, 1 April 2014

1 - FORCES AND MOTION 

 Motion experiment - 

1. Set up apparatus like picture (however, include a light gate at the start line, one at the base of the slope and one t the end of a long flat strip after) 
2. Mark start line 
3. Measure distance between each light gate 
4. Allow car to roll down from starting point (ensure light gates are linked to computer data software)
5. Repeat for average time taken for the car to reach each light gate 
6. Find average speed (average time taken between gates / distance between gates) 

 Possible alterations - 
  • Mass - put weights on car to see effect 
  • Friction - place different materials on ramp (eg: carpet) 
  • Acceleration (due to gravity) - move start line higher or lower, will affect average speed between gates
  • Speed - change angle of ramp 
  • Size/shape/weight of car - use different cars (eg: streamlined)
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