Physics

Problem

4\,\text{kg}

block slides on a rough horizontal table. If the coefficient of kinetic friction between the block and the table is

0.25\,

(take

g = 10\,\text{m s}^{-2}

), the magnitude of the kinetic friction acting on the block is a)

25\,\text{N}

10\,\text{N}

40\,\text{N}

2.5\,\text{N}