# Crossing the River (Minimum Distance)

## Trending Questions

**Q.**

River is flowing at 3 Km/h in the west direction and You can swim at a maximum speed of 5 Km/h , then at what direction must you swim so that you end up swimming perpendicular to the bank?

tan

^{-1}(⅗)sin

^{-1}(⅗)sin(⅗)

cos

^{-1}(⅗)

**Q.**

River is flowing at 3 Km/h in the west direction and You can swim at a maximum speed of 5 Km/h , Given if the river is 12 km wide, How long will you take to cross the river?

4 hr

2.4 hr

3 hr

Data insufficient

**Q.**A man wishes to cross a river and come back to original position by swimming minimum distance. If the width of the river is 50 m, speed of river is 2 m/s and velocity of man with respect to river is 4 m/s, then time taken by man to come back to original position is

50 √3 sec

50√2 sec

25 sec

25√3 sec

**Q.**A boat moves relative to water with a velocity u and river is flowing with 2u. At what angle with the stream should the boat move to have minimum drift ?

- 60∘
- 90∘
- 120∘
- 30∘

**Q.**A boat which has a speed of 5 km/h in still water crosses a river of width 1 km along the shortest possible path in 15 min. The velocity of the river water in km/h is

- 1
- 3
- 4
- √41

**Q.**A swimmer can swim in still water with a speed of 3 km/hr. Rate of flow of river is 6 km/hr. If the swimmer swims at angle 60o with flow of river, find speed of swimmer as seen by person, who is moving in a boat in the river.

- 7 km/hr
- 9 km/hr
- 3 km/hr
- 2 km/hr

**Q.**A man can swim with a speed of 4.0 km/h in still water. How long does he take tocross a river 1.0 km wide if the river flows steadily at 3.0 km/h and he makes hisstrokes normal to the river current? How far down the river does he go when he reaches the other bank ?

**Q.**A boat which has a speed of 5 km/h in still water crosses a river of width 1 km along the shortest possible path in 15 min. The velocity of the river water in km/h is

- 1
- 3
- 4
- √41

**Q.**

River is flowing at 3 Km/h in the west direction and You can swim at a maximum speed of 5 Km/h , Given if the river is 12 km wide, How long will you take to cross the river?

4 hr

2.4 hr

3 hr

Data insufficient

**Q.**A man wishes to cross a river and come back to original position by swimming minimum distance. If the width of the river is 50 m, speed of river is 2 m/s and velocity of man with respect to river is 4 m/s, then time taken by man to come back to original position is

50 √3 sec

50√2 sec

25 sec

25√3 sec