Home
Class 11
PHYSICS
Two trains A and B of length 400 m each ...

Two trains A and B of length 400 m each are moving on two parallel tracks with a uniform speed of `72 km h^(-1)` in the same direction, with A ahead of B. The driver of B decides to overtake A and accelerates by `1 m s^(-2)`. If after 50 s, the guard of B just brushes past the driver of A, what was the original distance between them ?

Text Solution

Verified by Experts

1250 m
Promotional Banner

Topper's Solved these Questions

  • MOTION IN A STRAIGHT LINE

    NCERT GUJARATI|Exercise ADDITIONAL EXERCISES|5 Videos

  • MOTION IN A STRAIGHT LINE

    NCERT GUJARATI|Exercise ADDITIONAL EXERCISES|5 Videos

  • MOTION IN A PLANE

    NCERT GUJARATI|Exercise EXCERCISES|30 Videos

  • OSCILLATIONS

    NCERT GUJARATI|Exercise Additional Exercises|6 Videos

Similar Questions

Explore conceptually related problems

Two trains A and B of length 400 m each are moving on two parallel tracks with a uniform speed of 72 km h^(-1) in the same direction, with A ahead of B. The dirver of B decides to overtake A and accelerates by 1 ms^(-2) . If after 50s, the guard of B just brushed past the driver of A, what was the original distance between them ?

Two trains A and B 100 m and 60 m long are moving in opposite direction on parallel tracks. The velocity of the shorter train is 3 times that of the longer one. If the trains take 4s to cross each other, the velocities of the trains are

Two billiard balls each of mass 0.05 kg moving in opposite directions with speed 6 m s^(-1) collide and rebound with the same speed. What is the impulse imparted to each ball due to the other ?

A police van moving on a highway with a speed of 30 km h^(-1) Fires a bullet at a thief's car speeding away in a same direction with a speed of 192 km h^(-1) . If the muzzle speed of the buller is 150 m s^(-1) , with what speed does the bullet hit thief's car? . .

Two trains one of length l_(1)=630m and other of length l_(2)=120m move uniformly in two parallel paths in opposite direction with speed mu_(1)=48 km//h and mu_(2)=102 km//h respectively.

Two trains each of length 50m. are running with constant speeds on parallel tracks. While moving in same direction one over takes the other in 40 seconds and while moving in opposite direction on ecrosses the other in 20 seonds. The speeds of trains will be:-

Two cars A and B are moving in same direction with velocities 30 m/s and 20 m/s. When car A is at a distance d behind the car B, the driver of the car A applies brakes producing uniform retardation of 2m//s^(2) . There will be no collision when :-

A car is moving with at a constant speed of 60 km h^(-1) on a straight road. Looking at the rear view mirror, the driver finds that the car following him is at a distance of 100 m and is approaching with a speed of 5 km h^(-1) . In order to keep track of the car in the rear, the driver begins to glance alternatively at the rear and side mirror of his car after every 2 s till the other car overtakes. If the two cars were maintaining their speeds, which of the following statement (s) is // are correct?

A driver of train A, moving at a speed 30 ms^(-1), sights another train B going on the same track and in the same direction with speed 10 ms^(-1). He immediately applies brake that gives his train a constant retardation of 2 ms^(-2). What must be the minimum distance between trains in order to avoid a collision ?

NCERT GUJARATI-MOTION IN A STRAIGHT LINE-EXERCISES
  1. A drunkard walking in a narrow lane takes 5 steps forward and 3 steps ...

    Text Solution

    |

  2. A jet airplane travelling at the speed of 500 km h^(-1) ejects its pro...

    Text Solution

    |

  3. A car moving along a straight highway with speed of 126 km h^(-1) is b...

    Text Solution

    |

  4. Two trains A and B of length 400 m each are moving on two parallel tra...

    Text Solution

    |

  5. On a two-ane road, car A is travelling with a speed of 36 km h ^(-1). ...

    Text Solution

    |

  6. Two towns A and B are connected by a regular bus service with a bus le...

    Text Solution

    |

  7. A player throws a ball upwards with an initial speed of 29.4 ms^(-1) ...

    Text Solution

    |

  8. Read each statement below carefully and state with reasons and example...

    Text Solution

    |

  9. A ball is dropped from a height of 90 m on a floor. At each collision ...

    Text Solution

    |

  10. Explain clearly, with examples, the distinction between : (a) magnitud...

    Text Solution

    |

  11. A man walks on a straight road from his home to a market 2.5 km away w...

    Text Solution

    |

  12. In Exercises 3.13 and 3.14, we have carefully distinguished between av...

    Text Solution

    |

  13. Look at the graphs (a) to (d) (Fig.) carefully and state, with reasons...

    Text Solution

    |

  14. Figure. shows the x-t plot of one-dimensional motion of a particle. Is...

    Text Solution

    |

  15. A police van moving on a highway with a speed of 30 kmh^(-1) fires a b...

    Text Solution

    |

  16. Suggest a suitable physical situation for each of the following graphs...

    Text Solution

    |

  17. Figure. gives the x-t plot of a particle executing one-dimensional sim...

    Text Solution

    |

  18. Figure. gives the x-t plot of a particle in one-dimensional motion. Th...

    Text Solution

    |

  19. Figure. gives a speed-time graph of a particle in motion along a const...

    Text Solution

    |

  20. A three wheeler starts from rest, accelerates uniformly with 1 ms-2 on...

    Text Solution

    |