A boat can move with a speed of 5 km h in still water A

Last updated: 6/13/2023

A boat can move with a speed of 5 km h in still water A river is flowing with a speed of 3 km h and having a width of 10 km The minimum time taken for a round trip to the exact same point is A 1 hr B 2 hr C 3 hr D 4 hr Solution D Given VBr 5 km h V 3 km h For the minimum time of round trip he should cross perpendicular to the river While going V VBr 0 VBr 4 m s B V A Velocity of boat with respect to river VBr in the direction perpendicular to the river is given by V V 5 3 Br