Home
Class 11
PHYSICS
A river 500m wide is flowing at a rate o...

A river `500m` wide is flowing at a rate of `4 m//s.` A boat is sailing at a velocity of `10 m//s` with respect to the water, in a direction perpendicular to the river. The time taken by the boat to reach the opposite bank

A

30 s

B

40 s

C

50 s

D

60 s

Text Solution

Verified by Experts

The correct Answer is:
C


y : displacement = velocity x time
`500=10t rArr t = 50s`
Promotional Banner

Topper's Solved these Questions

  • MOTION IN A PLANE

    DC PANDEY|Exercise (B) Meical entrance special format questions (Assertion and reason)|19 Videos
  • MOTION IN A PLANE

    DC PANDEY|Exercise (B) Meical entrance special format questions (Mathch the columns)|6 Videos
  • MOTION IN A PLANE

    DC PANDEY|Exercise Check point 3.7|15 Videos
  • MOTION

    DC PANDEY|Exercise Medical entrances gallery|19 Videos
  • PROJECTILE MOTION

    DC PANDEY|Exercise Level - 2 Subjective|10 Videos

Similar Questions

Explore conceptually related problems

A river 400 m wide is flowing at a rate of 2.0 m//s. A boat is sailing at a velocity of 10.0 m//s with respect to the water In a direction perpendicular to the river. (a) Find the time taken by the boat to reach the opposite bank. (b) How far from the point directly opposite to the starting point does the boat reach the opposite bank?

A 400 - m wide river is flowing at a rate of 2.0 m s^-1 . A boat is sailing with a velocity of 10 m s^-1 with respect to the water, in a direction perpendicular to the river. (a) Find the time taken by the boat to reach the opposite bank. (b) How far from the point directly opposite to the starting point does the boat reach the opposite bank ? ( c) In what direction does the boat actually move ?

A river 60m wide is flowing at a rate of 4m/s .A boat is sailing at a velocity of 20 m/s with respect to the river in a direction making an angle 37^(@) with the direction of river flow.Find time taken by the boat in seconds to reach the opposite bank. (A) 2 (B) 3 (C) sqrt(6) (D) 5

A river is 20 m wide. River speed is 3 m//s. A boat starts with velocity 2sqrt2 m//s at angle 45^@ from the river current (relative to river) (a) Find the time taken by the boat to reach the opposite bank. (b) How far from the point directly opposite to the starting point does the boat reach the opposite bank?

Velocity of the boat with respect to river is 10m/s. From point A it is steered in the direction shown. Where will it reach on the opposite bank ?

The river 500 m wide is flowing with a current of 4kph. A boat starts from one bank of the river wishes to cross the river at right angle to stream direction. Boatman can row the boat at 8 kph. In which direction he should row the boat. What time he ''ll take to cross the river ?

A man with some passengers in his boat, starts perpendicular to flow of river 200 m wide and flowing with 2 m//s. Speed of boat in still water is 4 m//s. When he reaches half the width of river the passengers asked him that they want to reach the just opposite end from where they have started. (a) Find the direction due which he must row to reach the required end. (b) How many times more time, it would take to that if he would have denied the passengers?

A river 5 Km wide is flowing at the rate of 2 Km/H. The minimum time taken by a boat to cross the river with a speed 5 Km/H (in still water) is approximately

A man wishes to cross a river which is flowing at a certain speed . Man uses a motor boat whose velocity with respect to water is more than speed of flow. Minimum possible time the boat takes to cross the river is t_(1) , but drift along the length of river is x . When boat takes shortest route to cross the river , then it takes time t_(2) . Find the velocity of boat with respect to water .

DC PANDEY-MOTION IN A PLANE-(A) Taking it together
  1. The velocity (upsilon) of a particle moving along X-axis varies with i...

    Text Solution

    |

  2. A car A moves along north with velocity 30 km/h and another car B move...

    Text Solution

    |

  3. Rain is falling vertically downward with velocity 4m//s. A man is movi...

    Text Solution

    |

  4. A ship is travelling due east at a speed of 15 km//h. Find the speed ...

    Text Solution

    |

  5. A man takes 3 h to cover a certain distance along the flow and takes ...

    Text Solution

    |

  6. A river 500m wide is flowing at a rate of 4 m//s. A boat is sailing at...

    Text Solution

    |

  7. A ball is dropped vertically from a height d above the ground . It hit...

    Text Solution

    |

  8. The driver of a train moving at a speed v(1) sights another train at ...

    Text Solution

    |

  9. A boat which has a speed of 5 km per hour in still water crosses a riv...

    Text Solution

    |

  10. Two car A and B travelling in the same direction with velocities v1 an...

    Text Solution

    |

  11. Water drops fall at regular intervals from a tap 5 m above the ground....

    Text Solution

    |

  12. A ball is thrown vertically up with a velocity u. It passes three poin...

    Text Solution

    |

  13. A particle moving along x-axis has acceleration f, at time t, given by...

    Text Solution

    |

  14. The position x of a particle with respect to time t along the x-axis i...

    Text Solution

    |

  15. Two particles P and Q simultaneously start moving from point A with ve...

    Text Solution

    |

  16. A body falling from a high mimaret travels 40 meters in the last 2 sec...

    Text Solution

    |

  17. A small block slides without friction down an iclined plane starting f...

    Text Solution

    |

  18. A particle located at x = 0 at time t = 0, starts moving along with t...

    Text Solution

    |

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

    Text Solution

    |

  20. An elevator car whose floor to ceiling distance is equal to 2.7 m star...

    Text Solution

    |