Home
Class 12
PHYSICS
A block of the mass of 1 kg is moving on...

A block of the mass of 1 kg is moving on the x-axis . A force F acting on the block is shown . The velocity of the block at time t = 2 s is - `3 m s^(-1)` what is the speed of the block at time t = 4 s?

A

`8 ms ^(-1)`

B

`2 ms ^(-1)`

C

`3 ms ^(-1)`

D

`5 ms ^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • NTA NEET SET 69

    NTA MOCK TESTS|Exercise PHYSICS|45 Videos

  • NTA NEET SET 71

    NTA MOCK TESTS|Exercise PHYSICS|45 Videos

Similar Questions

Explore conceptually related problems

A block of the mass of 1 kg is moving on the x -axis. A force F acting on the block is shown. The veloity of the block at time t = 2 s is -3ms^(-1) . What is the speed of the block at time t = 4 s?

The friction force acting on the block at time t = 4 s will be

The force acting on the block is given by F = 5 - 2t . The frictional force acting on the block after time t = 2 seconds will be: ( mu = 0.2)

A block of mass m slides 0n a frictionless table. It is constrained to move inside a ring of radius R . At time t=0 , block is moving along the inside of the ring (i.e. in the tangential direction) with velocity v_(0) . The coefficient of friction between the block and the ring is mu . Find the speed of the block at time t .

A block of mass 5 kg is placed on bus moving with acceleration 2 m//s^(2) .pseudo force acting on block as seen by a man on ground is -

A block of mass 10 kg is kept over a rough surface and a force F=4t is applied on it. At what value of t the block will start moving :-

A 4.0-kg block slides along a frictionless surface with a constant speed of 5.0 m/s as shown. Two seconds after it begins sliding, a horizontal, time-dependent force is applied to the mass. The force is removed 8 s later. The graph shows how the force on the block varies with time. What is the approximate speed of the block at t =11 s?

A block of mass 4 kg is placed on a rough horizontal force plane. A time dependent horizontal force F = k t acts on the block. Here k = 2 Ns^(-1) . The frictional force between the block and plane at time t = 2 s is (mu = 0.2)

A block of mass 1 kg is kept on the tilted floor ofa lift moving, down with 3 m// s^(2) . If the block is released from rest as shown, what will be the time taken by block to reach the bottom. What is the normal reaction on the block during the motion?

A block of mass 2 kg is placed on the floor (mu=0.4) . A horizontal force of 7 N is applied on the block. The force of friction between the block & floor is f_(s) . Find the f_(s) .

NTA MOCK TESTS-NTA NEET SET 70-PHYSICS
  1. Two bullets are fired simultaneously, horizontally and with different ...

    Text Solution

    |

  2. On a smooth plane surface (figure ) two block A and B are accelerated ...

    Text Solution

    |

  3. A block of the mass of 1 kg is moving on the x-axis . A force F acting...

    Text Solution

    |

  4. The activity of a radioactive substance becomes from 8000 Bq to 1000 B...

    Text Solution

    |

  5. Calculate the energy equivalent of 1g of substance.

    Text Solution

    |

  6. The time period of a simple pendulum measured inside a stationary lift...

    Text Solution

    |

  7. A particle is subjected to two simple harmonic motions along x and y d...

    Text Solution

    |

  8. Wavelength of characteristic X-ray depends on which property of target...

    Text Solution

    |

  9. The work functions of three metals A, B and C are W A ,WB and WC resp...

    Text Solution

    |

  10. Two water pipes P and Q having diameters 2 xx 10^(-2) m and 4 xx 10^(...

    Text Solution

    |

  11. A hydraulic automobile life has input and output pistons with diameter...

    Text Solution

    |

  12. If the distance between the virtual image from Its real object is 60 c...

    Text Solution

    |

  13. Two thin equiconvex lenses each of focal length 0.2 m are placed coaxi...

    Text Solution

    |

  14. A uniform disc of mass M and radius R is hinged at its centre C . A fo...

    Text Solution

    |

  15. Two balls of mass m and 4m are connected by a rod of length L. The mas...

    Text Solution

    |

  16. Two identical p-n junctions may be connected in series in which a batt...

    Text Solution

    |

  17. A reverse biased diode is

    Text Solution

    |

  18. A liquid of density 0.85 g//cm^(3) flows through a calorimeter at the ...

    Text Solution

    |

  19. The pressure on a square plate is measured by measuring the force on t...

    Text Solution

    |

  20. A single slit Fraunhofer diffraction pattern is formed with white lig...

    Text Solution

    |