Question

what are the substance that reduces friction



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Answer 1

Answer:

smooth substances reduce friction

Answer 2

$\large \bold{ \underline{ \underline{ \sf \: Answer : \: \: \: }}}$

$\star$ Friction can be reduced by polishing

$\star$ Friction can be reduced by using ball bearings

$\star$ Friction can be reduced by lubrication

$\star$ Friction can be reduced by streamliing

$\star$Friction can be reduced by maintaining cushion of air between solid suraface