Home
Class 12
PHYSICS
The momentum of a body decreases by 20%,...

The momentum of a body decreases by `20%`, the percentage decrease in Kinetic energy will be

A

`28%`

B

`36%`

C

`44%`

D

`56%`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • KINETICS THEORY OF GASES

    MBD PUBLICATION|Exercise QUESTION BANK|264 Videos
  • MAGNETISM AND MATTER

    MBD PUBLICATION|Exercise QUESTION BANK|191 Videos

Similar Questions

Explore conceptually related problems

If the momentum of a body increases by 20% , the percentage increases in K.E. will be

If the angular velocity of a body increases by 20% . At what percentage the kinetic energy of rotation will increase?

The kinetic energy of the body is increased by 300% . The percentage increases in momentum of the body will be

If the momentum of certain body be increased by 50% , it's K.E. will increase by

By what factor the momentum of a body will change so that its kinetic energy is doubled ?

If the momentum of a body moving along a straight path is halved, how will its kinetic energy change ?

MBD PUBLICATION-LINEAR MOMENTUM FORCE-QUESTION BANK
  1. The kinetic energy of the body is increased by 300%. The percentage in...

    Text Solution

    |

  2. A bomb of mass 9 kg explodes into two pieces of mass 3 kg and 6 kg. Th...

    Text Solution

    |

  3. The momentum of a body decreases by 20%, the percentage decrease in Ki...

    Text Solution

    |

  4. If the momentum of a body increases by 20%, the percentage increases i...

    Text Solution

    |

  5. A force is removed after applying on a body for a 5 sec and the body c...

    Text Solution

    |

  6. A body of mass 10 kg is moving with a velocity of 100 m/s. Find the ma...

    Text Solution

    |

  7. A body having a mass of 100 gm falls freely under the action of gravit...

    Text Solution

    |

  8. A 20 gram bullet moving at 300 m/s stops after penetrating 3 cm of bon...

    Text Solution

    |

  9. A motor car of mass 200 kg is moving with a velocity of 72 km/hr. By t...

    Text Solution

    |

  10. A motor car running at the rate of 7 m/s can be stopped by it's brakes...

    Text Solution

    |

  11. A force of 16 N acts on a ball of mass 80 gm for one micro-second. Cal...

    Text Solution

    |

  12. A cricket ball of mass 0.2 kg moving with a velocity of 20 m/s is brou...

    Text Solution

    |

  13. A rubber ball of mass 0.05 kg falls from a height of 1 m and rebounds ...

    Text Solution

    |

  14. A lift has a mass of 6000 kg. The upward tension of the supporting cab...

    Text Solution

    |

  15. A gun weighing 8 kg flies a bullet 40 gm wih a velocity 400 m/s. With ...

    Text Solution

    |

  16. A hunter has a machine gun that can fire 50 gm bullets with velocity 9...

    Text Solution

    |

  17. A machine gun of mass 15 kg fires 30g bullets at the rate of 5 bullets...

    Text Solution

    |

  18. A body of mass 1 kg initially at rest explodes and breaks into three f...

    Text Solution

    |

  19. A neuron having mass 1.67x10^-27 kg and moving at 10^8m/s collides wit...

    Text Solution

    |

  20. A rocket burns 0.2 kg of fuel per second and ejects it as a gas with v...

    Text Solution

    |