A Boy Is Standing at the Stern (Back)of a Boat

Multiple Choice

A boy is standing at the stern (back) of a boat that is 8.0 m long.There is no friction between the boat and the water.The boy has a mass of 63 kg and the boat has a mass of 780 kg.The bow (front) of the boat is touching a dock and the fore-and-aft axis of the boat is perpendicular to the dock.The boy walks from the stern of the boat to the bow.When he reaches the bow,his distance from the dock is

A) 7.6 m
B) 0.65 m
C) 0.51 m
D) 0.56 m
E) 1.3 m