Home
Class 11
PHYSICS
A car travels the first half of a distan...

A car travels the first half of a distance between two places at a speed of `30 km// hr` and the second half of the distance at `50 km//hr` . The average speed of the car for the whole journey is

A

`37.5 km//hr`

B

`42 km//hr`

C

`40 km//hr`

D

`49 km//h`

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 car travels first half distance between two places with a speed of 40 km/h and the rest of the half distance with a speed of 60 km/h. The average speed of the car is

A car travels first half distance between two places with a speed of 40 km/h and the rest half distance with a speed of 60 km/h. The average speed of the car will be-

A car travels from A to B at a speed of 20 km//hr and returns at a speed of 30 km//hr . The average speed of the car for the whole journey is

A man was travelling half of the total distance at a speed of 30 km/h and the rest distance at the speed of 50 km/h. What was the average speed of the man on his whole journey ?

A car travels the first one third of a certain distant with a speed of 10 km/hr, the next one third distant with a speed of 20 km/hr and the last one third distance with a speed of 60 km/hr. The average speed of the car for the whole journey is 18 k m//h r b. 24 k m//h r c. 30 k m//h r d. 36 k m//h r

SL ARORA-MECHANICS-Exercise
  1. A car A is travelling on a straight level road with a uniform speed of...

    Text Solution

    |

  2. A particle is constrained to move on a straight line path. It returns ...

    Text Solution

    |

  3. A car travels the first half of a distance between two places at a spe...

    Text Solution

    |

  4. A car travels from A to B at a speed of 20 km//hr and returns at a spe...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |