A river flows due south with a speed of 2.0 m/s. A man steers a motorboat across the river; his velocity relative to the water is 4 m/s due east. The river is 800 m wide. How far south of his starting point will be reach the bank?
400 m
In the previous question, we found the time taken to be 200 s, in the same time he would have traversed
vy×tm
∴y=vy×t
= 2×200
= 400m