Home
Class 12
PHYSICS
The acceleration 'a' (in ms^(-2)) of a b...

The acceleration 'a' (in `ms^(-2)`) of a body, starting from rest varies with time t (in s) following the equation `a =3t+ 4` The velocity of the body at time t= 2s will be

A

`10 ms^(-1)`

B

`18 ms^(-1)`

C

`14 ms^(-1)`

D

`26 ms^(-1)`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • QUESTION PAPER 2008

    WB JEE PREVIOUS YEAR PAPER|Exercise PHYSICS|38 Videos

  • QUESTION PAPER 2010

    WB JEE PREVIOUS YEAR PAPER|Exercise PHYSICS|45 Videos

Similar Questions

Explore conceptually related problems

The acceleration of an obeject starting from rest is related to time as a = Kt+c. What will be its velocity after time t ?

A body of mass m , starting from rest , moves with constant acceleration . After a time T it attains a velocity V. Show that the work done by the body in time t=1/2 m (V^2)/(T^2)*t^2*

The acceleration of a particle moving along a straight line is (6t^(2)-3t)cm//s^(2) , at time t seconds. If the velocity of the particel at time 2 seconds be 10cm/s, find its velocity at time t seconds.

A force F acts on a stationary body of mass m for a time t. Show that, the kinetic energy of the body iin that time =(F^2t^2)/(2m) .

WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2009-Multiple Choice Questions (Physics)
  1. vec(A) and vec(B) are two vectors given by vec(A) = 2hat(i) + 3hat(j) ...

    Text Solution

    |

  2. Given vec(C )= vec(A) xx vec(B) and vec(D) = vec(B) xx vec(A). What is...

    Text Solution

    |

  3. The acceleration 'a' (in ms^(-2)) of a body, starting from rest varies...

    Text Solution

    |

  4. Figure below shows the distance -time graph of the motion of a car. It...

    Text Solution

    |

  5. Two particles have masses m & 4m and their kinetic energies are in the...

    Text Solution

    |

  6. The force F acting on a particle moving in a straight line is shown be...

    Text Solution

    |

  7. If the kinetic energy of a body changes by 20% then its momentum would...

    Text Solution

    |

  8. A bullet is fired with a velocity u making an angle of 60^(@) with the...

    Text Solution

    |

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

    Text Solution

    |

  10. The Poisson's ratio of a material is 0.5. If a force is applied to a w...

    Text Solution

    |

  11. Two spheres of equal masses but radii r(1) and r(2) are allowed to fal...

    Text Solution

    |

  12. Two massless springs of force constant K(1) and K(2) are joined end to...

    Text Solution

    |

  13. A spring of force constant k is cut into two equal halves. The force c...

    Text Solution

    |

  14. Two rods of equal length and diameter have thermal conductivities 3 an...

    Text Solution

    |

  15. 10g of water at 30^(@)C and 5g of ice at -20^(@) C are mixed together ...

    Text Solution

    |

  16. It is difficult to cook rice in an open vessel by boiling it at high a...

    Text Solution

    |

  17. The height of a waterfall is 50m. If g= 9.8 ms^(-2) the difference bet...

    Text Solution

    |

  18. The distance between an object and a divergent lens is m times the foc...

    Text Solution

    |

  19. A 2.0cm tall object is placed 15cm in front of a concave mirror of foc...

    Text Solution

    |

  20. A beam of monochromatic blue light of wavelength 4200 Å in air travels...

    Text Solution

    |