A river flows due south with a speed of `2.0 ms^-1`. A man strees a motorboat across the river , his
Channel: Doubtnut
Date: 2020-07-26

A river flows due south with a speed of `2.0 ms^-1`. A man strees a motorboat across the river , his velocity relative to the water is `4 m s^-1` due east. The river is `800 m` wide.  (a) What is his velocity (magnitude and direction) relative to the earth ?  (b) How much time is required to cross the river ?  ( c) HOw far south of his starting points will he reach the opposite bank ?