Home
Class 12
PHYSICS
An automobile of mass m accelerates from...

An automobile of mass m accelerates from rest. If the engine supplies a constant power P, the velocity at time t is given by -

A

`V=(Pt)/(m)`

B

`V=(2Pt)/(m)`

C

`sqrt((Pt)/(m))`

D

`sqrt((2Pt)/(m))`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

An automobile of mass m accelerates, starting from rest, while the engine supplies constant power P, its position and instantaneous velocity changes w.r.t. time assuming the automobile starts from rest.

An automobile of mass 'm' accelerates starting from origin and initially at rest, while the engine supplies constant power P. The position is given as a function of time by :

Work done in time t on a body of mass m which is accelerated from rest to a speed v in time t_(1) as a function of time t is given b

An automobile engine of mass m accelerates and a constant power P is applied by the engine. The instantaneous speed of the engine will be

An automobile engine of mass m accelerates and a constant power Pis applied by the engine. The instantaneous speed of the engine will be

An object of mass m, initially at rest under the action of a constant force F attains a velocity v in time t. Then, the average power supplied to mass is

A body of mas m starts from rest with a constant power. If velocity of the body at displacement s is v, then the correct alternative is

DISHA-WORK, ENERGY AND POWER-physics
  1. The work done in pulling a body of mass 5 kg along an inclined plane (...

    Text Solution

    |

  2. A forcevecF=(7-2x+3x^(2)) N is applied on a 2 kg mass which displaces ...

    Text Solution

    |

  3. An automobile of mass m accelerates from rest. If the engine supplies ...

    Text Solution

    |

  4. In the above question, the position (s) at time (t) is given by -

    Text Solution

    |

  5. A particle moving in a straight line is acted by a force, which works ...

    Text Solution

    |

  6. A chain of linear density 3 kg /m and length 8 m is lying on the table...

    Text Solution

    |

  7. The work done in lifting water from a well of depth 6 m using a bucket...

    Text Solution

    |

  8. An object of mass 5 kg falls from rest through a vertical distance of ...

    Text Solution

    |

  9. A boy pulls a 5 kg block 20 metres along a horizontal sur- face at a c...

    Text Solution

    |

  10. A uniform chain is held on a frictionless table with one third of its ...

    Text Solution

    |

  11. A bus of mass 1000 kg has an engine which produces a constant power of...

    Text Solution

    |

  12. The power output of a92U^(235) reactor if it takes 30 days to use up 2...

    Text Solution

    |

  13. The stopping distance for a vehicle of mass M moving with a speed v al...

    Text Solution

    |

  14. The earth circles the sun once a year. How much work would have to be ...

    Text Solution

    |

  15. A particle of mass m is moving in a horizontal circle of radius r, und...

    Text Solution

    |

  16. The work done by a person in carrying a box of mass 10 kg through a ve...

    Text Solution

    |

  17. A uniform rod of length 4 m and mass 20 kg is lying horizontal on the ...

    Text Solution

    |

  18. If g is the acceleration due to gravity on the earth’s surface, the ga...

    Text Solution

    |

  19. The potential energy between two atoms in a molecule is given by, U((x...

    Text Solution

    |

  20. A man pushes a wall and fails to displace it.He does

    Text Solution

    |