A person pulls a block of mass 5 kg with a force of 10 N on a smooth horizontal surface. If the block is displaced by 2 m, what is the work done by the person?
Correct: B
Work done (W) is given by W = F × s, where F is the force applied and s is the displacement. Given, F = 10 N, s = 2 m. Substituting these values gives W = 10 × 2 = 20 J.