Home
Class 12
PHYSICS
A particle of mass 'm' at rest is acted ...

A particle of mass 'm' at rest is acted upon by a force 'P for a time 'r'. Its Kinetic energy after an interval 'r' is:

A

`(P^2t^2)/(m)`

B

`(P^2t^2)/(2m)`

C

`(P^2t^2)/(3m)`

D

`(Pt)/(2m)`

Text Solution

Verified by Experts

The correct Answer is:
b
Promotional Banner

Topper's Solved these Questions

  • WORK , POWER , ENERGY AND COLLISIONS

    MODERN PUBLICATION|Exercise Recent Competitive Questions|8 Videos
  • WAVE OPTICS

    MODERN PUBLICATION|Exercise Recent Competitive Questions|18 Videos

Similar Questions

Explore conceptually related problems

A body of mass m at rest is subjected to a constant force F for time. The kinetic energy at timet is given by :

Two bodies of masses m_1 and m_2 are acted upon by a constant force F for a time t . They start from rest and acquire kinetic energies E_(1) and E_(2) respectively . Then (E_(1))/(E_(2)) is

A particle of mass m and charge q is placed at rest in uniform electric field E and then released. The kinetic energy attained by the particle after moving a distance y is

An object with mass 5 kg is acted upon by a force, vecF = (-3hati + 4hatj) N. If its initial velocity at t = 0 is vecv = (6hati – 12hatj) m s^(-1) , the time at which it will just have a velocity along y-axis is

A particle of mass 'm' executes simple harmonic motion with amplitude 'a' and frequency v. The average kinetic energy during its motion from the position of equilibrium to the end is :

MODERN PUBLICATION-WORK , POWER , ENERGY AND COLLISIONS-Revision Test
  1. The particle moves along x-axis from x= x1 to x=x2 under the influence...

    Text Solution

    |

  2. An engine pumps a liquid of density ‘d’ continuously through a pipe of...

    Text Solution

    |

  3. A shell at rest at the origin explodes into three pieces of masses 1 k...

    Text Solution

    |

  4. K.E. of body is increased by 300 percent, then percentage increase in ...

    Text Solution

    |

  5. A long spring is stretched by 2 cm having potential energy as V. If th...

    Text Solution

    |

  6. A stationary particle explodes into two particles of masses m1 and m2 ...

    Text Solution

    |

  7. Two masses 1 gm and 4 gm are moving with equal kinetic energies. The r...

    Text Solution

    |

  8. A bullet of mass 'm' moving with velocity *v' strikes a block of mass ...

    Text Solution

    |

  9. A ball collides head-on with another at rest having 3 times the mass o...

    Text Solution

    |

  10. A body of mass 'm' moving with 3 km hr^(-1) collides with a body of ma...

    Text Solution

    |

  11. A 2.5 kg mass moving at a speed of 15 ms^(-1) collides with 5 kg objec...

    Text Solution

    |

  12. A ball is dropped on a horizontal plate from a height.The total distan...

    Text Solution

    |

  13. Water is flowing in a river at 2 ms^(-1). The river is 50 m wide and h...

    Text Solution

    |

  14. A ball dropped from a height of 2.43 m attains a height of 3 cm after ...

    Text Solution

    |

  15. In one dimensional motion a 1 kg body experiences a force which is fun...

    Text Solution

    |

  16. A particle of mass 'm' at rest is acted upon by a force 'P for a time ...

    Text Solution

    |

  17. A rifle (1)/(16) bullet loses th of its velocity while passing through...

    Text Solution

    |

  18. A motor delivers power which draws 100 liters per minute of water from...

    Text Solution

    |

  19. A ball falls vertically with a momentum 'p' and then bounces for large...

    Text Solution

    |

  20. A ball falls from rest from a height 'h' and rebounds to a height h/4....

    Text Solution

    |