michelleafwm michelleafwm
  • 03-05-2017
  • Chemistry
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Why do bicycles use gears

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joytoy4859
joytoy4859 joytoy4859
  • 03-05-2017
it is for safety if you come to a sudden stop like newtons law say if an object is in motion it stays in motion until a force stops it if the bike suddenly stopped then you would fly off because you wold still be going. and the gear helps protect you. 
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