A ship of mass 3 `xx` 107 kg initially at rest is pulled by a force of 5 `xx` 104 N through a distance of 3m. Assume that the resistance due to water is negligible, the speed of the ship is
F=ML-1T-2 ,The dimensional formulae,now put the value of F,M,L-1, and deduce the value of T-1,which is 1/30root2,now speed=LT-1,put the value of L and T-1 you will get 1/10root 2=0.07,so close to option 3