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

`30s`

B

`40s`

C

`50s`

D

`60s`

Text Solution

Verified by Experts

The correct Answer is:
C

`y:` displacement =velocity`xx`time
`500=10t implies t=50 s`
Promotional Banner

Topper's Solved these Questions

  • RELATIVE MOTION

    CP SINGH|Exercise EXERCISE|33 Videos

  • NEWTONS LAWS OF MOTION

    CP SINGH|Exercise EXERCISES|84 Videos

  • ROTATIONAL MOTION

    CP SINGH|Exercise Exercise|172 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 .

CP SINGH-RELATIVE MOTION-EXERCISE
  1. Four particles A, B, C and D are situated at the cornerst of a square ...

    Text Solution

    |

  2. Six particles situated at the corners of a regular hexagon of side a m...

    Text Solution

    |

  3. A particle A is at origin and particle B is at distance y=-d at t=0. T...

    Text Solution

    |

  4. A police jeep is chasing with, velocity of 45 km//h a thief in another...

    Text Solution

    |

  5. A cart is moving horizontally along a straight line with constant spee...

    Text Solution

    |

  6. A boat is moving with a velocity 3 hat i+ 4hat j with respect to groun...

    Text Solution

    |

  7. A boat crosses a river with a velocity of 8(km)/(h). If the resulting ...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  10. In the previous problem, the distance travelled by boat along the flow...

    Text Solution

    |

  11. A boat having a speed of 5km//hr. in still water, crosses a river of w...

    Text Solution

    |

  12. A man crosses a 320m wide river perpendicular to the current in 4 min....

    Text Solution

    |

  13. A man can swim in still water ast a speed of 3 km/h. He wants to cross...

    Text Solution

    |

  14. A man can swim in still water ast a speed of 3 km/h. He wants to cross...

    Text Solution

    |

  15. A man can swim at a speed of 3 km h^-1 in still water. He wants to cro...

    Text Solution

    |

  16. In the previous problem, How far from the point directly opposite to t...

    Text Solution

    |

  17. A person aiming to reach the exactly opposite point on the bank of a s...

    Text Solution

    |

  18. A river is flowing from west to east with a speed of 5 m//min. A man c...

    Text Solution

    |

  19. A river is flowing from east to west at a speed of 5(m)/(min). A man o...

    Text Solution

    |

  20. A man can swim with velocity v relative to water. He has to cross a ri...

    Text Solution

    |