Home
Class 12
PHYSICS
A,B and C are three persons who can row ...

A,B and C are three persons who can row their boats with speeds 10 m/s 7 m/s and 3 m/s respectively in still water Velociy of flow of water in a river is 7 m/s All start rowing their boats upstream then

A

Work done on A by water w.r.t. B is positive

B

Work done on B by water w.r.t. bank of river is zero

C

Work done on C by water w.r.t. B is negative

D

Work done on B by water w.r.t. C is positive

Text Solution

Verified by Experts

The correct Answer is:
A, B, C, D
Promotional Banner

Topper's Solved these Questions

  • WORK, ENERGY AND POWER

    AAKASH INSTITUTE|Exercise SECTION-D (LINKED COMPREHENSION TYPE QUESTIONS) (COMPREHENSION-I)|3 Videos
  • WORK, ENERGY AND POWER

    AAKASH INSTITUTE|Exercise SECTION-D (LINKED COMPREHENSION TYPE QUESTIONS) (COMPREHENSION-II)|3 Videos
  • WORK, ENERGY AND POWER

    AAKASH INSTITUTE|Exercise SECTION-B (SUBJECTIVE TYPE QUESTIONS) (ONE OPTIONS IS CORRECT)|44 Videos
  • WAVES

    AAKASH INSTITUTE|Exercise ASSIGNMENT ( SECTION-D ( Assertion - Reason Type Questions ))|12 Videos

Similar Questions

Explore conceptually related problems

If velocities of 3 molecules are 5 m/s, 6m/s and 7 m/s respectively, then their mean square velocity in m^2/s^2 is

If velocities of 3 molecules are 5 m/s, -6m/s and 7 m/s respectively, then their mean squar evelocity in m^(2)//s^(2)

A person reaches on a point directly opposite on the other bank of a river.The velocity of the water in the river is 4 m//s and the velocity of the person in still water is 5 m//s .If the width of the river is 84.6m , time taken to cross the river in seconds is

The water in a river flows at a speed of 1.5 kmph and a boatman, who can row his boat at a speed of 2.5kmph in still water, takes 7 (1)/(2) hours to go half distance upstream and then return to the starting point. the total distance covered by the boatman is

The water in a river flows at a speed of 1.5kmph and a boatman, who can row his boat at a speed of 2.5kmph in still water, takes 7(1)/(2) hours to go half distance upstream and then return to the starting point, the total distance covered by the boatman is

The speed of boat upstream and speed of boat downstream are 7 km/h and 13 km/h, respectively. Find the speed of stream and speed of boat in still water.

Swati can row her boat at a speed of 5km/hr in still water.if it takes her 1 hour more to row the boat 5.25km upstream than to return downstream,Find the speed of the stream.

Boat A travels downstream from Point X to Point Y in 3 hours less than the time taken by Boat B travel upstream from Point Y to Point Z. The distance between X and Y is 20 km, which is half of the distance between Y and Z. The speed of Boat B in still water is 10 km/h and the speed of Boat A in still water is equal to the speed of Boat B upstream What is the speed of Boat A in Still water? (Consider the speed of the current to be the same.) a. 10 k m//h b. 16 k m//h c. 12 k m//h d. 8 k m//h

AAKASH INSTITUTE-WORK, ENERGY AND POWER-SECTION-C (OBJECTIVE TYPE QUESTIONS) (MORE THAN ONE OPTIONS ARE CORRECT)
  1. A body of mass 2 kg is dropped from rest from a height 20 m from the s...

    Text Solution

    |

  2. Consider the body of mass 0.2 kg and a smooth incline of hight 3.2 m a...

    Text Solution

    |

  3. A body is acted upon by a force. If work done by the force is zero, th...

    Text Solution

    |

  4. A,B and C are three persons who can row their boats with speeds 10 m/s...

    Text Solution

    |

  5. A body is moving on a circlar path of radius r with constant speed und...

    Text Solution

    |

  6. Potential energy U(r ) varies with position r as shown in figure ...

    Text Solution

    |

  7. Figure shows a plot of the potential energy as a function of x for a p...

    Text Solution

    |

  8. A 5 kg body is fired vertically up with a speed of 200 m/s. Just befor...

    Text Solution

    |

  9. Which of the following statements are incorrect?

    Text Solution

    |

  10. The kinetic energy of a particle continuously icreses with time

    Text Solution

    |

  11. A block of mass 10 kg is hanging over a smooth and light pulley throug...

    Text Solution

    |

  12. The work done by the force of gravity is 100 J

    Text Solution

    |

  13. In the figure show m=1kg, M = 2 kg. When smaller block (m) descends t...

    Text Solution

    |

  14. A light rigid rod of length l is hinged at one end and it is free to ...

    Text Solution

    |

  15. Potential energy of a system of particles is U(alpha)/(3r^(3))-(beta)/...

    Text Solution

    |

  16. A block hangs freely from the end of a spring. A boy then slowly pushe...

    Text Solution

    |