Home
Class 12
PHYSICS
A boat is sent across a river with a vel...

A boat is sent across a river with a velocity 8 km/h. If the resultant velocity of the boat is 10 km/h, then what is the velocity of the river ?

A

`12.8` km/h

B

6 km/h

C

8 km/h

D

10 km/h.

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    MBD PUBLICATION|Exercise QUESTION BANK|338 Videos

  • WAVE OPTICS

    MBD PUBLICATION|Exercise QUESTION BANK|218 Videos

Similar Questions

Explore conceptually related problems

What is the resultant velocity of a stationary wave ?

A man is walking on a road with a velocity of 3km/h . Suddenly rain starts falling . The velocity of the rain is 10 km/h in vertically downward direction. The relative velocity of the rain is

A motor boat is to reach at a point 30^@ upstream on other side of the river flowing with velocity 5m//s The velocity of motor boat with respect to water is 5sqrt3 m//s . At what angle the driver should steer the boat ?

MBD PUBLICATION-VECTOR ANALYSIS-QUESTION BANK
  1. Three vectors vec A, vec B and vec C satisfy the relation vec A. vec B...

    Text Solution

    |

  2. A force (7 hat i + 6 hat k ) newton makes a body move on a rough pla...

    Text Solution

    |

  3. A boat is sent across a river with a velocity 8 km/h. If the resultant...

    Text Solution

    |

  4. If abs(vecA+vecB)=abs(vecA-vecB) find the angle between vecA and vecB...

    Text Solution

    |

  5. If vec(a) and vec(b) are unit vectors inclined at an angle theta, then...

    Text Solution

    |

  6. Given vecA=(2hati-hatj+3hatk) and vecB=3hati-3hatj-2hatk find the unit...

    Text Solution

    |

  7. Determine the magnitude of the vector having initial point P(x1,y1,z1)...

    Text Solution

    |

  8. Prove that the vectors A=3i+j-2k ,B=-i+3j+4k and C=4i-2j-6k can form a...

    Text Solution

    |

  9. An air plane is flying with velocity 50km/h in north east direction . ...

    Text Solution

    |

  10. Consider two vectors vecF=(4hati-10hatj) Newton and vecr=(-5hati-4hatj...

    Text Solution

    |

  11. Rain is falling vertically with a speed of 35ms^(-1) Wind starts blowi...

    Text Solution

    |

  12. The position of a particle is given byvecr=3.0t (hati)+2.0t^2(hatj)+5....

    Text Solution

    |

  13. Two equal velocities have got a resultant equal to either.what is the ...

    Text Solution

    |

  14. At what angle do two forces (P+Q) and (P-Q) act so that the resultant...

    Text Solution

    |

  15. Determine the direction and magnitude of the resultant of the followin...

    Text Solution

    |

  16. A force of 60 N is applied horizontally find its rectangular component...

    Text Solution

    |

  17. A force of 60 kg wt is applied horizontally find its rectangular compo...

    Text Solution

    |

  18. A force of 60 kg wt is applied horizontally find its rectangular compo...

    Text Solution

    |

  19. A mass M kg is suspended by a weightless string. What is the horizonta...

    Text Solution

    |

  20. Two forces of each magnitude 5N are inclined to each other at 60^@.Fin...

    Text Solution

    |