A boy `(mass of 40 kg)` is standing at one end of a boat (mass of 60 kg) in still water. The length of the boat is `10 m` and the boy takes `2s` to reach at other end of boat moving with constant speed. Assuming no friction between the boat and the water.
(i) The distance covered by the boat is `4 m`
(ii) The distance covered by the boy with respect to the ground is `6 m`.
(iii) The velocity of the boy with respect to the ground is `lt 5 m//s`
(iv) The velocity of the boy is `3 m//s`