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    4. when is friction useful
    when is friction useful

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    +2  Views: 920 Answers: 6 Posted: 14 years ago
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      6 Answers

      when your car is braking.

      14 years ago. Rating: 5
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        Procreating would be another great purpose..

        14 years ago. Rating: 4
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          It can sharpen your tongue. 

          14 years ago. Rating: 4
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            to keep a biker on his seat


            to keep cars on the road 


            to help cars and bikes to brake 


            when sanding wood


            to start a match


            to stop slipping on any suffices 


            to help us pick things up or grip things


            to stop our shoes from sliping


            unable to write with out friction


            to help us to stop when running


             


             

            14 years ago. Rating: 4
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              What first came to mind was on a vacuum cleaner belt....

              14 years ago. Rating: 3
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                We use it and depend on it "Every day in every way"

                14 years ago. Rating: 3
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