Home
Class 12
PHYSICS
A man of 80 kg attempts to jump from the...

A man of 80 kg attempts to jump from the small boat of mass 40 kg on to the shore. He can generate a relative velocity of 6 m/s between him and boat. His velocity towards shore is

A

2 m/s

B

3 m/s

C

4 m/s

D

8 m/s

Text Solution

Verified by Experts

The correct Answer is:
A


`80(6-V)-40V=0`
`V=4 rArr 6-V=2`
Promotional Banner

Topper's Solved these Questions

  • TEST PAPERS

    BANSAL|Exercise PHYSICS PART (A)|32 Videos
  • TEST PAPERS

    BANSAL|Exercise PHYSICS PART (B)|3 Videos
  • TEST PAPERS

    BANSAL|Exercise PHYSICS PART- C|4 Videos
  • SEMICONDUCTORS

    BANSAL|Exercise CBSE Question|32 Videos

Similar Questions

Explore conceptually related problems

A boat of mass 50kg is at rest. A dog of mass 5kg moves in the boat with a velocity of 20m//s . What is the velocity of boat?

A boat of mass 40kg is at rest. A dog of mass 4kg moves in the boat with a velocity of 10m//s . What is the velocity of boat (nearly)?

A girl of mass 50 kg jumps out of a rowing boat of mass 300 kg on to the bank, with a horizontal velocity of 3 m/s. With what velocity does the boat begin to move backwards ?

A man of mass m runs without sliding from rest from one end of a boat of mass M and length l with an acceleration a relative to the boat. If the friction between water and boat is neglected find the a. acceleration of CM of the system (M+m) b. acceleration of the man and boat c. position of man at the time when he reaches to other end of the boat d. frictional force e. work done by friction on boat. f. total work done by friction. g. velocities of man and boat when the man reaches other end of the boat. h. work down by man

A man of mass 80 kg is riding on a small cart of mass 40 kg which is rolling along a level floor at a speed 2 m/s . He is running on the cart , so that his velocity relative to the cart is 3 m/s in the direction opposite to the motion of cart . What is the speed of the centre of the mass of the system ?

A person P of mass 50 kg stands at the middle of a boat of mass 100 kg moving at a constant velocity 10 m/s with no friction between water and boat and also the engine of the boat is shut off. With what velocity (relative to the boat surface) should the person move so that the boat comes to rest. Neglect friction between water and boat.

A man of mass 60kg jumps from a trolley of mass 20kg standing on smooth surface with absolute velocity 3m//s . Find velocity of trolley and total energy produced by man.

A boy of mass 60 kg running at 3//s jumps on to a trolley of mass 140 kg moving with a velocity of 1.5m//s in the same direction . What is their common velocity?

A bullet of mass 40 g is fired from a gun of mass 10 kg. If velocity of bullet is 400 m/s. then the recoil velocity of the gun wil be

A bullet of mass 40g is fired from a gun of mass 10 kg. If velocity of bullet is 400 m/s, then the recoil velocity of the gun will be

BANSAL-TEST PAPERS-PHYSICS
  1. Two masses of 1 gm and 4 gm are moving with equal kinetic energies. Th...

    Text Solution

    |

  2. A thin uniform steel chain is 10 meters long with a mass density of 2 ...

    Text Solution

    |

  3. A man of 80 kg attempts to jump from the small boat of mass 40 kg on t...

    Text Solution

    |

  4. On a disc fixed in a vertical plane, we have a string with its one end...

    Text Solution

    |

  5. In a cricket match, a bowler piecks up a ball (0.5 kg ) from ground. H...

    Text Solution

    |

  6. The diagram below is a snapshote of three cars all moving couterclockw...

    Text Solution

    |

  7. The diagram below is a snapshote of three cars all moving couterclockw...

    Text Solution

    |

  8. The diagram below is a snapshote of three cars all moving couterclockw...

    Text Solution

    |

  9. An elevator is rising at constant speed. Select the correct statements...

    Text Solution

    |

  10. The potential energy of a particle of mass 5 kg moving in xy-plane is ...

    Text Solution

    |

  11. A physics student on Planet Exidor throws a ball, and it follows the p...

    Text Solution

    |

  12. In the figure shown, all the surfaces are rough. Both the blocks have ...

    Text Solution

    |

  13. A particle of mass m is suspended from a string so that it can move in...

    Text Solution

    |

  14. In the arrangements shown in figure, the pulleys are all massless. The...

    Text Solution

    |

  15. In figure shown, both blocks are released from rest. Length of 4 kg bl...

    Text Solution

    |

  16. A ball is thrown vertically upwards from a height of 40 m and hits the...

    Text Solution

    |

  17. System is released from rest. If all contacts surface are smooth, the ...

    Text Solution

    |

  18. A solid hemisphere of radius R is mounted on a solid cylinder of same ...

    Text Solution

    |

  19. A block of mass 1 kg is suspended from a spring of constant 100 N/m. i...

    Text Solution

    |

  20. With what angular velocity omega (in rad/s) should we rotate the disc ...

    Text Solution

    |