Home
Class 11
PHYSICS
A car moves from X to Y with a uniform s...

A car moves from `X` to `Y` with a uniform speed `v_u` and returns to `Y` with a uniform speed `v_d`. The average speed for this round trip is :

A

`(2v_(d) v_(u))/(v_(d) + v_(u))`

B

`sqrt(v_(u) v_(d))`

C

`(v_(d) v_(u))/(v_(d) + v_(u))`

D

`(v_(u) + v_(d))/(2)`

Text Solution

Verified by Experts

The correct Answer is:
A
Av. Speed `= (2v_(1) v_(2))/(v_(1) + v_(2))`
Promotional Banner

Topper's Solved these Questions

  • MOTION IN A STRAIGHT LINE

    GRB PUBLICATION|Exercise More than one choice is correct|16 Videos

  • MOTION IN A STRAIGHT LINE

    GRB PUBLICATION|Exercise Assertion Reason|12 Videos

  • MOTION IN A STRAIGHT LINE

    GRB PUBLICATION|Exercise Problems and Practice|16 Videos

  • FRICTION AND CIRCULAR MOTION

    GRB PUBLICATION|Exercise Comprehension type|11 Videos

  • MOTION IN TWO AND THREE DIMENSIONS

    GRB PUBLICATION|Exercise All Questions|210 Videos

Similar Questions

Explore conceptually related problems

A particle moving with uniform speed

A train goes from P to Q with an average speed of u km/h and returns from Q to P with an average speed of v km/h. What is its average speed for the entire journey in km/h?

If a body covers first half of its journey with uniform speed v_(1) and the second half of the journey with uniform speed v_(2) . Then the average speed is

A car travels from X to Y at a speed of 50km/h and returns back from Y to X at a speed of 60km/h Find the average speed and velocity of the car.

GRB PUBLICATION-MOTION IN A STRAIGHT LINE-Objective question
  1. A ball of mass 0.2 kg is thrown vertically upwards by applying a force...

    Text Solution

    |

  2. A man throws balls with the same speed vertically upwards one after th...

    Text Solution

    |

  3. A car moves from X to Y with a uniform speed vu and returns to Y with ...

    Text Solution

    |

  4. A point initially at rest moves along x-axis. Its acceleration varies ...

    Text Solution

    |

  5. A lift is moving with a uniform downward acceleration of 2 m//s^(2). A...

    Text Solution

    |

  6. A juggler maintains four balls in vertically upwards motion. He attemp...

    Text Solution

    |

  7. A particle is projected vertically from the ground, takes time t(1) up...

    Text Solution

    |

  8. A particle moving in a straight line covers half the distance with spe...

    Text Solution

    |

  9. A train moving with uniform speed passes a pole in 10 sec and a bridge...

    Text Solution

    |

  10. Engine of a train that is moving with unifrom acceleration passes a po...

    Text Solution

    |

  11. For a particle moving along a straight line, its velocity 'v' and disp...

    Text Solution

    |

  12. A car accelerates from rest at a constant rate alpha for some time, af...

    Text Solution

    |

  13. In Q.94, time for which the car decelerates is:

    Text Solution

    |

  14. In Q.94, total distance travelled by the car is:

    Text Solution

    |

  15. A person is standing at a distance 's' m from a bus. The bus begins to...

    Text Solution

    |

  16. The driver of a train moving at a speed v(1) sights another train at ...

    Text Solution

    |

  17. The deceleration exerienced by a moving motor blat, after its engine i...

    Text Solution

    |

  18. A train is moving towards East with a speed 20 m/s. A person is runnin...

    Text Solution

    |

  19. A packet is released from a balloon which is moving upward when the ba...

    Text Solution

    |

  20. A stone dropped from the top of a tower travels (5)/(9) th of the heig...

    Text Solution

    |