Answer
The correct answer is:
(a) directly to the east
Work Step by Step
The correct answer is:
(a) directly to the east
The boy's resultant velocity vector will be the sum of the the water's velocity vector and the velocity vector of the boat. To minimize the time it takes to paddle across the river, the boy should maximize the east component of his resultant velocity vector.
Therefore, the boy should head directly to the east.