Home
Class 12
PHYSICS
The speed of a swimmer in still water is...

The speed of a swimmer in still water is 20 m//s. The speed of river water of river water is 10 m//s and due east. If he is standing on the south bank and wishes to cross the river along the shortest path the angle at which he should make his stroke w.r.t. noth is given by :-

A

`30^(@)` west

B

`0^(@)`

C

`60^(@)`

D

`45^(@)` west

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • MOTION IN A STRAIGHT LINE & PLANE

    VMC MODULES ENGLISH|Exercise EFFICIENT|50 Videos

  • MOCK TEST 9

    VMC MODULES ENGLISH|Exercise PHYSICS (SECTION 2)|5 Videos

  • Motion in Straight Line

    VMC MODULES ENGLISH|Exercise IN-CHAPTER EXERCISE-J|10 Videos

Similar Questions

Explore conceptually related problems

The velocity of a boat in still water is 10 m/s. If water flows in the river with a velocity of 6 m/s what is the difference in times taken to cross the river in the shortest path and the shortest time. The width of the river is 80 m.

Velocity of boat in still water is 13 m/s. If water flows ina river with a velocity of 5 m/s. What is the difference in times taken by him to cross the river in the shortest path and in the shortest time. If the width of the river is 10 m.

2 km wide river flowing with a rate of 5 km/hr. A man can swim in the still water with10 km/hr. He wants to cross the river along shortest path find In which direction person should be swim

2 km wide river flowing with a rate of 5 km/hr. A man can swim in the still water with10 km/hr. He wants to cross the river along shortest path find Crossing time

A swimmer can swim in still water with speed v and the river is flowing with speed v//2 . What is the ratio of the time taken to swimming across the river in shortest time to that of swimming across the river over the shortest distance ?

The velocity if a swimmer (v) in stil water is less than the velocity of water (u) in a river. Show that the swimmer must aim himself at an angles cos^-1 (v//u) with upstream in order to cross the river along the shortest possible path. Find thr drifting (distance moved along the direction of stream in crossing the river) of the swimmer along this shortest possible path.

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

If speed of water in river is 4 m/s and speed of swimmer with respect to water is 3 m/s, then in which direction the swimmer must swim so that he will reach directly opposite end?

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): A man is on the northern bank of a river. To cross the river in a shortest time he should swim due south. (R) : Man should move opposite to the river flow to cross in shortest time.

VMC MODULES ENGLISH-MOTION IN A STRAIGHT LINE & PLANE -IMPECCABLE
  1. The position x of a particle varies with time t as x=at^(2)-bt^(3). Th...

    Text Solution

    |

  2. A body iniitially at rest is moving with uniform acceleration a. Its v...

    Text Solution

    |

  3. A paricle stating from the (o,o) moves in a stainght line in the (x,y)...

    Text Solution

    |

  4. A particle has displacement of 12 m towards east and 5 m towards north...

    Text Solution

    |

  5. A wheel completes 2000 revolutions to cover the 9.5 km distance. Find ...

    Text Solution

    |

  6. A train is moving slowly on a straightly track with a constant speed o...

    Text Solution

    |

  7. A ball thrown vertically upwards with an initial velocity of 1.4 m//s....

    Text Solution

    |

  8. From the top of a tower, a particle is thrown vertically downwards wit...

    Text Solution

    |

  9. A body falls freely form rest. It covers as much distance in the last ...

    Text Solution

    |

  10. A body falls freely from the top of a tower. It covers 36% of the tota...

    Text Solution

    |

  11. The speed of a projectile at its maximum height is half of its initial...

    Text Solution

    |

  12. A boy standing at the top of a tower of 20m of height drops a stone. A...

    Text Solution

    |

  13. A boy is moving with velocity 30 m//s towards East. After 10s, its vel...

    Text Solution

    |

  14. A boy standing at the top of a water of 20 m height drops a stone. Ass...

    Text Solution

    |

  15. A missile is fired for maximum range with an initial velocity of 20 m/...

    Text Solution

    |

  16. The horizontal range and the maximum height of a projectile are equal....

    Text Solution

    |

  17. A stone falls freely under gravity. It covers distances h(1), h(2) and...

    Text Solution

    |

  18. A particle is moving such that its position coordinates (x, y) are (2m...

    Text Solution

    |

  19. The speed of a swimmer in still water is 20 m//s. The speed of river w...

    Text Solution

    |

  20. When an object is shot from the bottom of a long smooth inclined plane...

    Text Solution

    |