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  • I have a hypothesis... I think that marble that are higher will role faster and I'll prove it!
  • hmm...
  • By rolling this ball 10x down one ramp for one book and then adding books per trial we will learn that the speed will pick up for every book we add to make it higher but still keeping th e distantce controlled. 
  • Now that we timed the first trial we will come up with our average time and compare as we add on books.
  • Two Books
  • 
  • Three Books
  • 
  • Four Books
  • 
  • 1 Book 2.19 (average #) 2 Books 1.43 (average #) 3 Books 1.10 (average #) 4 Books .91 (average #)
  • As you can see the time decreases as the books increase speed. The height is independent while the time is dependent, because it depends on the height of the books.
  • So mark now you know that by increasing the height of the "ramp" the ball's speed increases. My hypothesis was therefore correct.
  • she does make a point 
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