Home
Class 12
PHYSICS
A 6.0kg mass is moving to the right at 1...

A `6.0kg` mass is moving to the right at `10 m//s`. A `0.25kg` mass is fired toward the left at the larger mass. What speed `(v)` must the smaller mass have to completely stop both masses?

A

`4.2m//s`

B

`15m//s`

C

`150m//s`

D

`240m//s`

Text Solution

Verified by Experts

The correct Answer is:
D
Ans.(4)
Momentum conservation
`10xx6-25xxv=0` `v-240m//s`
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

Two planets have masses M and 16 M and their radii are a and 2a, respectively. The separation between the centres of the planets is 10a. A body of mass m is fired trom the surface of the larger planet towards the samller planet along the line joining their centres. For the body to be able to reach at the surface of smaller planet, the minimum firing speed needed is :

A particle of mass m moving with speed V collides elastically with another particle of mass 2m. Find speed of smaller mass after head on collision

A man fires a bullet of mass 200 g at a speed of 5 m //s . The gun is of one kg mass. by what velocity the gun rebounds backwards

A body of mass 20kg is moving on a rough horizontal plane. A block of mass 3kg is connected to the 20 kg mass by a string of negligible mass through a smooth pulley as shown in the figure. The tension in the string is 27 N. The coefficient of kinetic friction between the heavier mass and the surface is (g = 10m/ s^2 )

A cart A of mass 50 kg moving at a speed of 20 km/h hits a lighter cart B of mass 20 kg moving towards it at a speed of 10 km/h. The two carts cling to each other. Find the speed of the combined mass after the collision.

A bomb of mass 3.0 kg explodes in air into two pieces of masses 2.0 kg and 1.0 kg . The smaller mass goes at a speed of 80 m//s . The total energy imparted to the two fragments is :

A shell of mass 0.020 kg is fired by a gun of mass 100 kg. If the speed of the shell is 80 m/s , the recoil speed of the gun would be

Consider a system of two particles having masses 2kg and 5 kg the particle of mass 2 kg is pushed towards the centre of mass of particles through a distance 5 m,by what distance would particle of mass 5kg move so as to keep the centre of mass of particles at the original position?

A shell of mass 0.02 kg is fird by a gun of mass 10 kg. If the muzzle speed of the shell is 600 ms^(-1) , what is the recoil speed of the gun?

The mass of a hoop of radius 0.30 m is 2kg. It rolls along a horizontal floor so that its centre of mass has a speed of 2 m/s. What is the work done to stop it ?

ALLEN-TEST PAPER-Exercise (Physics)
  1. A uniform chain of mass m and length l hanges on a thread and touches ...

    Text Solution

    |

  2. Two forces F(1) and F(2) are applied simultaneously on a 2kg block res...

    Text Solution

    |

  3. A 6.0kg mass is moving to the right at 10 m//s. A 0.25kg mass is fired...

    Text Solution

    |

  4. Two identical balls moving in opposite directions in free space collid...

    Text Solution

    |

  5. In figure, determine the character of the collision. The masses of the...

    Text Solution

    |

  6. A rod has non uniform mass distribution. The mass increases uniformly ...

    Text Solution

    |

  7. A solid hemisphere and a hemisphereical shell are joined as shown. Bot...

    Text Solution

    |

  8. In a system of four thin uniform rods are each of mass inas shown. If ...

    Text Solution

    |

  9. A vertical rectangular door with its centre of gravity at O (see figur...

    Text Solution

    |

  10. A rectangular metal plate ABCD is supported by two hinges P(1) and P(2...

    Text Solution

    |

  11. A uniform beam of weight W is attached to a verical wall by a hings H....

    Text Solution

    |

  12. A body is free to rotate about an axis parallel to y-axis. A force of ...

    Text Solution

    |

  13. A disc of radius R=2m starts rotating wth constant angular acceleratio...

    Text Solution

    |

  14. In the balance machine shown in the figures. Which arm will move downw...

    Text Solution

    |

  15. A uniform disc of mass M =2.50 kg and radius R = 0.20 m is mounted on ...

    Text Solution

    |

  16. A car runs at constant speed around the horizontal race track shown in...

    Text Solution

    |

  17. A man M slides down a curved frictionless track, starting from rest. ...

    Text Solution

    |

  18. An object moves counter-clockwise along the circular path shown below....

    Text Solution

    |

  19. A girl finds herself stuck with her back to the wall of a cylinder rot...

    Text Solution

    |

  20. A puck of mass m is moving in a circle at constant speed on a friction...

    Text Solution

    |