Question

It is difficult to run on a polished surface. Explain why

Answer 1

because a polished surface have less irrregularties and this will not all we'd interlocking of your feet and surface which leads to less friction and you will slip .

Answer 2

as because of less frictional force between floor and our feet

as because of less frictional force between floor and our feet that is why it is difficult to run on polish surface