Home
Class 11
PHYSICS
A force of 5N is applied on a 20 Kg mass...

A force of 5N is applied on a 20 Kg mass at rest. The work doen in the third secondis

A

`(25)/(8)J`

B

`(25)/(4)J`

C

12 J

D

25 J

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • WORK POWER ENERGY

    AAKASH SERIES|Exercise EXERCISE - 3|61 Videos
  • WORK POWER ENERGY

    AAKASH SERIES|Exercise EXERCISE - 1B|39 Videos
  • WORK -POWER-ENERGY

    AAKASH SERIES|Exercise PRACTICE SHEET (ADVANCED) (STRAIGHT OBJECTIVE TYPE QUESTIONS)|36 Videos
  • WORK, POWER & ENERGY

    AAKASH SERIES|Exercise PRACTICE EXERCISE (PERFECTLY INELASTIC COLLISIONS)|5 Videos
AAKASH SERIES-WORK POWER ENERGY-EXERCISE - 2
  1. A force of (4x^(2)+3x)N acts on a particle which displaces it from x=2...

    Text Solution

    |

  2. Velocity -time graph of a particle of mass 2 kg moving in a straight l...

    Text Solution

    |

  3. A force of 5N is applied on a 20 Kg mass at rest. The work doen in the...

    Text Solution

    |

  4. A body moves a distance of 20 m along a striaght line under the action...

    Text Solution

    |

  5. The work done in lifting a body of mass 20 kg and specific gravity 3.2...

    Text Solution

    |

  6. The work done in carrying a body from A to B is 20 J and from B to C i...

    Text Solution

    |

  7. A particle of mass 0.1 kg is subjected to a force which varies with d...

    Text Solution

    |

  8. A uniform metre scale of mass 2kg is suspended from on end. If it is d...

    Text Solution

    |

  9. Two sopheres whose radii are in the ratio 1:2 are moving with theier v...

    Text Solution

    |

  10. A river of salty water is flowling with a velocity 2 m/sec. If the den...

    Text Solution

    |

  11. When a spring is compresssed by 3 cm the potential energy stored in it...

    Text Solution

    |

  12. If the kinetic energy of a body increases by 125% the percentage incre...

    Text Solution

    |

  13. The kinetic energy of a body is s.K.. If one - fourth of its mass is r...

    Text Solution

    |

  14. A body of mass 6 kg is under a force which causes displacement in it g...

    Text Solution

    |

  15. A particle of mass 100 g is thrown verticaly upwards with the speed of...

    Text Solution

    |

  16. A bullet of mass 10 gm hits a fixed target and penetrates through 8 cm...

    Text Solution

    |

  17. A body of mass 5 kg has linear momentum of 20 kgm/s. If a constant for...

    Text Solution

    |

  18. The ratio of energy required to accelerated a car from rest to 20ms^(-...

    Text Solution

    |

  19. A light string of length 20 cm is carrying a bob of mas 100 gm. If is ...

    Text Solution

    |

  20. A particle is projected at 60^(@) to the horizontal with a kinetic ene...

    Text Solution

    |