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