To a man walking at 7km/hr deu west, wind appears to blow from north-west. But when he walks 3km/hr deu west, wind appears to blow from North. what is the actual direction of wind and what is it's velocity?
To a man walking at 7km/hr deu west, wind appears to blow from north-west. But when he walks 3km/hr deu west, wind appears to blow from North. what is the actual direction of wind and what is it's velocity?










