A man can swim with a speed 4km/hr in still water. (a) How long does he takes to cross a river
Channel: Doubtnut
Date: 2020-01-28

A man can swim with a speed 4km/hr in still water. (a) How long does he takes to cross a river 1 km wide if the river flows steadily at 3 km/hr and makes his strokes normal to the river current? (b) How far down the river does he go when he go when he reaches the other bank?