Q. 4.14 In a harbour, wind is blowing at the speed of and the flag on the mast of a boat anchored in the harbour flutters along the N-E direction. If the boat starts moving at a speed of to the north, what is the direction of the flag on the mast of the boat?
According to the question the figure is shown below:-
The angle between velocity of wind and opposite of velocity of boat is (90 + 45) = 135 degree.
So the flag will be just 0.11 degree from the perfect east direction.