The stream of a river is flowing with a speed of 2 km/h. A swimmer can swim at a speed of 4 km/h. What should be the direction of the swimmer with respect to the flow of the river to cross the river straight?

A swimmer can swim in still water with a speed of 2.5 m/s. What is the shortest time taken by him to swim across the river?

A swimmer wants to cross a 600 m wide river . If the speed of swimmer is 12 km/hr in still water and speed of river is 6km/hr , along what direction the swimmer must strike in order to cross the river straight ? Also, calculate his resultant velocity and time taken by him to do so .

A man can swim at the rate of 5 km//h in still water. A river 1 km wide flows at the rate of 3km h^(-1) . A swimmer wishes to cross the river straight.

A river is flowing due east with a speed 3ms^(-1) . A swimmer can swim in still water at a speed of 4ms^(-1) . If swimmer starts swimming due north, then the resultant velocity of the swimmer is

A river is flowing at a speed of 5 km/h in a particular direction. A man, who can swim at a speed of 20 km/h in still water, starts swimming along the direction of flow of the river from point A and reaches another point B which is at a distance of 30 km from the starting point A. On reaching point B, the man turns back and starts swimming against the direction of flow of the river and stops after reaching point A. The total time taken by the man to complete his journey is

A river is flowing at the rate of 6 km/hr. A swimmer swims across with a velocity of 9 km/hr w.r.t. water. The resultant velocity of the man will be in (km/hr):-

A swimmer wishes to cross a 500m wide river flowing at a rate 5km/hr. His speed with respect to water is 3km/hr. (a) If the heads in a direction making an angle theta with the flow, he takes to cross the river. (b) Find the shortest possible time to cross the river.

If the speed of a swimmer in still water is 9 km/h. Find the down stream speed of the swimmer,whenthe river is flowing with the speed of 6 km/h.