Home
Class 11
PHYSICS
A bullet of mass 10 gm strikes a target ...

A bullet of mass `10 gm` strikes a target at `400 m//s` velocity and does half of its initial velocity. The loss of kinetic energy in joules is

A

`800`

B

`200`

C

`400`

D

`600`

Text Solution

Verified by Experts

The correct Answer is:
D
`Delta KE = (1)/(2)m(v_(1)^(2)-v_(2)^(2)), v_(2) = (v_(1))/(2)`
Promotional Banner

Topper's Solved these Questions

  • COLLISION

    NARAYNA|Exercise Level-II (H.W)|54 Videos

  • COLLISION

    NARAYNA|Exercise Subjective type Questions|9 Videos

  • CIRCULAR MOTION

    NARAYNA|Exercise LEVEL II(H.W)|51 Videos

  • FRICTION

    NARAYNA|Exercise Passage type of questions I|6 Videos

Similar Questions

Explore conceptually related problems

A bag of sand of mass M is suspended by a string. A bullet of mass m is fired at it with velocity v and gets embedded into it. The loss of kinetic energy in this process is

A bullet of mass 20gram strikes a target with a velocity of 100m // s and is brougth to rest after piercing 20cm into it. What is the average force of resistance offered by the target?

A bullet of mass 10 g is fired with a velocity of 100 m/s from a rifle of mass 2.5 kg, the recoil velocity of the rifle is

A bullet of mass m=10 gm strikes a hanging block of mass M=50 gm inelastically, with a horizontal velocity v_(0)=60 m//s . Find the change in tension (in N) in the string during collision. Round of to nearest integer. (Take : l=1m)

A 50 g bullet moving with velocity 10 m / s strikes a block of mass 950 g at rest and gets embedded in it. The loss in kinetic energy will be

A bullet of mass 4.2 gm is moving at certain velocity. If all its kinetic energy liberated is 20 cal, then the initial velocity of the bullet is

NARAYNA-COLLISION-Level-I (H.W)
  1. A force F=(2+x) acts on a particle in x-direction where F is in newton...

    Text Solution

    |

  2. On increasing the speed of a bosy to 2ms^(-1), its kinetic energy is q...

    Text Solution

    |

  3. A bullet of mass 10 gm strikes a target at 400 m//s velocity and does...

    Text Solution

    |

  4. An object is acted on by a retarding force of 10 N and at a particular...

    Text Solution

    |

  5. A man standing on the edge of the roof of a 20 m tall building project...

    Text Solution

    |

  6. A river of salty water is flowing with a velocity 2m//sec. If the dens...

    Text Solution

    |

  7. If the kinetic energy of a body increases by 125%, the percentage incr...

    Text Solution

    |

  8. The kinetic energy of a body is 'K'. If one-fourth of its mass is remo...

    Text Solution

    |

  9. An inelastic ball falls from a height of 100 metres. It loses 20% of i...

    Text Solution

    |

  10. A woman weighing 63 kg eats plum cake whose energy content is 9800 cal...

    Text Solution

    |

  11. A spring of spring constant 5 xx 10^(3) N//m is stretched initially by...

    Text Solution

    |

  12. A spring with spring constant K when stretched through 1 cm, the poten...

    Text Solution

    |

  13. A body moving with a kinetic energy of 6J cmes to rest at a distance o...

    Text Solution

    |

  14. A ship of mass 3xx10^7kg initially at rest, is pulled by a force of 5x...

    Text Solution

    |

  15. A vehicle of mass 1000 kg is moving with a velocity of 15 ms^(-1).It i...

    Text Solution

    |

  16. The workdone to accelerate a body from 30 ms^(-1) to 60 ms^(-1) is thr...

    Text Solution

    |

  17. A block of mass 4 kg is initially at rest on a horizontal frixtionless...

    Text Solution

    |

  18. A block of mass 4 kg slides on a horizontal frictionless surface with ...

    Text Solution

    |

  19. At what height above the ground must a mass of 5 kg be to have its PE ...

    Text Solution

    |

  20. A body slides down a fixed curved track that is one quadrant of a circ...

    Text Solution

    |