a block having mass 500g slides on a rough horizontal table if the friction btw. the block and table is 0.2 and intial speed of the block is 60cm/s calculate
a } work done by the frictional force in bringing the block to rest
b} how far does the block move before coming to rest?
Work done by the frictional force is same as the loss of kinetic energy of the body.
Retardation = 0.2(10) = 2 m/s2
Let the block take time t second to stop.