21 A block of mass 4 kg is kept over a rough horizontal

Last updated: 6/9/2023

21 A block of mass 4 kg is kept over a rough horizontal surface The coefficient of friction between the block and the surface is 0 1 At t 0 31 velocity is m S imparted to the block and simultaneously 21 N force starts acting on it Its displacement in m in first 5 s is a 8 b 81 c 3