Home
Class 11
PHYSICS
A person travelling on a straight line m...

A person travelling on a straight line moves with a uniform velocity `v_1` for some time and with uniform velocity `v_2` for the next equal time. The average velocity v is given by

A

`sqrtv_1v_2`

B

`(1/v_1 + 1/v_2)^(-1)`

C

`v_1 + v_2 /2`

D

`2(1/v_1 + 1/v_2)^(-1)

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • MECHANICS

    SL ARORA|Exercise Exercise|341 Videos

  • Mechanical Properties of Solids

    SL ARORA|Exercise Example|113 Videos

  • Motion in a Plane

    SL ARORA|Exercise Excercise|397 Videos

Similar Questions

Explore conceptually related problems

A person travelling on a straight line moves with a uniform velocity v_1 for a distance x and with a uniform velocity v_2 for the next equal distance. The average velocity v is given by

A vehicle is moving on a rough road in a straight line with uniform velocity

A particle is moving in a straight line. It covers half of the total distance with velocity v_(0) Remaining half distance is covered with a velocity v_(1) for half the time and with velocity v_(2) for another half of time. Find the average velocity of the particle.

A body travelling along a straight line traversed one-third of the total distance with a velocity v_1 . The remaining part of the distance was covered with a velocity v_2 for half the time and with velocity v_3 for the other half of time. The mean velocity averaged over the whole time of motion

A point traversed half the distance with a velocity v_0 . The remaining part of the distance was covered with velocity v_1 for half the time, and with velocity v_2 for the other half of the time. Find the mean velocity of the point averaged over the whole time of motion.

A body travels with velocity v_(1) for time t_(1) second and with velocity v_(2) for time t_(2) second in the same direction, fide the avetage velocity of the body.

A person travels along a straight road for the first half length with a velocity v_(1) and the second half length with velocity v_(2) . What is the mean velocity of the person ?

A point traversed half of the total distance covered by its with velocity v_0 .The remaining part of the distance was covered with velocity v_1 for half of the remaining time, and with velocity v_2 for the other half of the remaining time.Find the mean velocity of the point over the whole time of motion.

SL ARORA-MECHANICS-Exercise
  1. A car travels from A to B at a speed of 20 km//hr and returns at a spe...

    Text Solution

    |

  2. If the first one - third of q journey is travelled at 20 km h^(-1) , ...

    Text Solution

    |

  3. A person travelling on a straight line moves with a uniform velocity v...

    Text Solution

    |

  4. A 100 m long train is moving with a uniform velocity of 45 km//hr. ...

    Text Solution

    |

  5. You drive a car at a speed of 70 km//h in a straight road for 8.4 km, ...

    Text Solution

    |

  6. A car moving with a speed of 25 ms^(-1) takes a U-turn in 5 seconds, ...

    Text Solution

    |

  7. A particle moves along the x-axis with a position given by the equatio...

    Text Solution

    |

  8. The motion of a particle is described by the equation at u = at.The di...

    Text Solution

    |

  9. The acceleration a of a particle starting from rest varies with time a...

    Text Solution

    |

  10. Given a = 2t + 5. Calculate the velocity of the body after 10 sec if i...

    Text Solution

    |

  11. With the usual notations the following equation S(t)=u+1/2a(2t-1) is

    Text Solution

    |

  12. What is the relation between displacement, time and acceleration in ca...

    Text Solution

    |

  13. A body sliding down on a smooth inclined plane slides down 1//4th dist...

    Text Solution

    |

  14. A particle moving in one dimension with a constant acceleration of 2 m...

    Text Solution

    |

  15. A particle starts from rest, accelerates at 2(m)/(s^2) for 10 s and th...

    Text Solution

    |

  16. The velocity of a particle at an instant is 10 m s^(-1). After 3 s its...

    Text Solution

    |

  17. A particle starts from rest with uniform acceleration a. Its velocity...

    Text Solution

    |

  18. A car accelerates from rest at a constant rate for some time after wh...

    Text Solution

    |

  19. The velocity with which a body stricks the ground is always equal to ...

    Text Solution

    |

  20. If a ball is thrown vertically upwards with a velocity of 40m//s, then...

    Text Solution

    |