Home
Class 12
PHYSICS
A particle of mass 2 kg starts moving in...

A particle of mass 2 kg starts moving in a straight line with an intial velocity of `2 m//s` at a constant acceleration of `2 m//s^(2)`. Then, rate of change of kinetic energy

A

is four times the velocity at any moment

B

is two times the displacement at any moment

C

is four times the rate of change of velocity at any moment

D

is constant throughout

Text Solution

Verified by Experts

The correct Answer is:
A
`F = ma = 2 xx 2 = 4 N ," "` Rate of change of KE = rate of work done by F
`F = Fv = 4v`.
Promotional Banner

Topper's Solved these Questions

  • ENERGY & MOMENTUM

    VMC MODULES ENGLISH|Exercise Level - 1 PARAGRAPH QUESTIONS|3 Videos

  • ENERGY & MOMENTUM

    VMC MODULES ENGLISH|Exercise LEVEL - 2|48 Videos

  • ENERGY & MOMENTUM

    VMC MODULES ENGLISH|Exercise LEVEL - 0 - LONG ANSWER TYPE|5 Videos

  • ELECTROSTATICS

    VMC MODULES ENGLISH|Exercise JEE Advanced (Archive)|89 Videos

  • GASEOUS STATE & THERMODYNAMICS

    VMC MODULES ENGLISH|Exercise JEE ADVANCED (ARCHIVE )|111 Videos

Similar Questions

Explore conceptually related problems

A particle of mass 2 kg starts moving in a straight line with an initial velocity of 2 m//s at a constant acceleration of 2 m//s^(2) . Then rate of change of kinetic energy.

A particle is moving along a straight line along x-zxis with an initial velocity of 2 m//s towards positive x-axis. A constant acceleration of 0.5 m//s^(2) towards negative x-axis starts acting on particle at t=0 . Find velocity (in m//s ) of particle at t=2 s .

A particle starts to move in a straight line from a point with velocity 10 m s^(-1) and acceleration - 2.0 m s^(-2) . Find the position and velocity of the particle at (i) t = 5 s, (ii) t' = 10 s.

A particle, initially at rest, starts moving in a straight line with an acceleration a=6t+4 m//s^(2) . The distance covered by it in 3 s is

A particle starts from the origin at t = 0 s with a velocity of 10.0 hatj m/s and moves in plane with a constant acceleration of (8hati + 2hatj)ms^(-2) . The y-coordinate of the particle in 2 sec is

A particle mass 1 kg is moving along a straight line y=x+4 . Both x and y are in metres. Velocity of the particle is 2m//s . Find the magnitude of angular momentum of the particle about origin.

A particle moving along a straight line with uniform acceleration has velocities 7 m//s at A and 17 m//s at C. B is the mid point of AC. Then :-

A particle starts from the origin at t=Os with a velocity of 10.0 hatj m//s and moves in the xy -plane with a constant acceleration of (8hati+2hatj)m//s^(-2) . What time is the x -coordinate of the particle 16m ?

Two cars A and B of equal masses (100 Kg) are moving on a straight horizontal road with same velocity 3m//s as shown. At t = 0 car A starts accelerating with constant acceleration of 2 m//s^(2) (intial separation between car is 25 m ). Choose correct options (neglect length of cars)

A particle starts with a velocity of 2m//s and moves in a straight line with a retardation of 0.1m//s^(2) . The time that it takes to describe 15m is

VMC MODULES ENGLISH-ENERGY & MOMENTUM-Level - 1
  1. A block of mass M hanging over a smooth and light pulley through a lig...

    Text Solution

    |

  2. A particle moves move on the rough horizontal ground with some initial...

    Text Solution

    |

  3. A particle of mass 2 kg starts moving in a straight line with an intia...

    Text Solution

    |

  4. For a block of mass m to slide without friction up the rise of height ...

    Text Solution

    |

  5. A rectangular block is mobing along a frictionless path, when it encou...

    Text Solution

    |

  6. A particle falls from rest under gravity. Its potential energy with re...

    Text Solution

    |

  7. A particle of mass m is released from height h on smooth quarter circu...

    Text Solution

    |

  8. A block is released from the top of two inclined rough surfaces of hei...

    Text Solution

    |

  9. A particle is given an initial speed u inside a smooth spherical shell...

    Text Solution

    |

  10. A small object of mass m, on the end of a light cord, is held horizont...

    Text Solution

    |

  11. A particle is rotated in vertical circle by connecting it to string f...

    Text Solution

    |

  12. A heavy particle of weight w, attached to a fixed point by a light ine...

    Text Solution

    |

  13. Two springs A and B(kA=2kB) are stretched by applying forces of equal ...

    Text Solution

    |

  14. A block of mass m is initially moving to the right on a horizontal fri...

    Text Solution

    |

  15. A horizontal 50 N force acts on a 2 kg crate which is at rest on a smo...

    Text Solution

    |

  16. The speed v reached by a car of mass m in travelling a distance x, dri...

    Text Solution

    |

  17. The first graph shows the potential energy U(x) for a particle moving...

    Text Solution

    |

  18. Potential energy of a particle is related to x coordinate by equation ...

    Text Solution

    |

  19. A particle of mass 15 kg has an initial velocity vecv(i) = hati - 2 ha...

    Text Solution

    |

  20. A U-shaped wire has a semicircular bending between A and B as shown in...

    Text Solution

    |