Question

A swimmer is determined to cross a river that flows due south with a strong current. Initially, the swimmer is on the west bank desiring to reach a camp directly across the river on the opposite bank. In which direction shoud the swimmer head?

A. The swimmer should swim southeast.

B. The swimmer should swim south.

C. The swimmer shuold swim northeast.

D. The swimmer should swim due north.

E. The swimmer should swim due east.

Answer 1

Answer:

C. The swimmer should swim northeast.

Explanation:

A swimmer expects to reach to the eastern bank of a river by swimming whose stream flows from north to south. Then in order to reach the directly opposite bank of the river when standing on the western bank, the swimmer must swim towards northeast direction so that the resultant of the velocity of flow and the velocity of swimming results in a net velocity towards the east direction.