A boy can swim in still water at `1m//s`. He swims across a river flowing at 0.6m/s which is 336 m wide. If the travels in shortest possible time, then what time he takes to cross the river?

A man can swim at a speed of 3 km/h in still water. He wants t cross a 500 m wide river flowing at 2 km/h. He flow at an angle of 120 with the river flow while swimming. A. Find the time he takes to cross the river. b.At what point on the opposite bank will he arrive?

A man can swim in still water at a speed of 4 kmph . He desires to cross a river flowing at a speed of 3 kmph in the shortest time interval. If the width of the river (in hours) and the horizontal distance travelled (in km) are respectively

A swimmer can swim in still water with a speed of 3 ms^(-1) While crossing a river his average speed is 5 ms^(-1) If crosses the river in the shortest possible time, what is the speed of flow of water ?

A person can swim in still water at 5 m//s .He moves in a river of velocity 3 m//s , first down the steam and next same distance up the stream. The ratio of times taken are

A river is (1)/(2) km wide and flows at the rate of 3 kmph. A man, who can swim in still water at the rate of 5 kmph wishes to reach the other bank of the river. In what direction should he start swimmin to cross the river (a) along the shortest route, (b) in the shortest possible time ? Calculate how much time he will take to cross the river in the two cases.

A swimmer wishes to cross a 500 - m river flowing at 5 km h^-1 . His speed with respect to water is 3 km h^-1 . The shortest possible time to cross the river is.

A man can swim at a speed of 5km//h in the still water. He wants to cross a 1600m wide river flowing at 4 km//h . He keeps himself at an angle 127^(@) with the river flow while swimming. (a) Find the time he takes to cross the river. (b) Find the distance traveled by him along the flow.

A man can swim in still water with a speed of 2 ms^-1 . If he wants to cross a river of water current speed sqrt(3) ms^-1 along the shortest possible path, then in which direction should he swim ?

A man can swim in still water at 4m//s river is flowing at 2m//s . the angle with downstream at which he should swim to cross the river minimum drift is

A swimmer can swim in still water with speed v and the river is flowing with velociyt v//2 . To cross the river in shortest distance, he should swim making angle theta with the upstream. What is the ratio of the time taken to swim across the shortest time to that is swimming across over shortest distance