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 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 ?

Text Solution

Verified by Experts

1250 m
Promotional Banner

Topper's Solved these Questions

  • MOTION IN A STRAIGHT LINE

    NCERT TAMIL|Exercise ADDITIONAL EXERCISES|5 Videos
  • MOTION IN A STRAIGHT LINE

    NCERT TAMIL|Exercise ADDITIONAL EXERCISES|5 Videos
  • MOTION IN A PLANE

    NCERT TAMIL|Exercise EXCERCISES|32 Videos
  • MOTION OF SYSTEM OF PARTICLES AND RIGID BODIES

    NCERT TAMIL|Exercise EXERCISE (V. NUMERICAL PROBLEMS) |6 Videos

Similar Questions

Explore conceptually related problems

Consider two trains A and B moving along parallel tracks with the same velocity in the same direction. Let the velocity of each train be 50kmh^(-1) due east. Calculate the relative velocities of the trains.

Two insulated charge copper sphere A and B have their centres separated by a distance of 50 cm. What is the force of repulsion, if each sphere is charged double the above amonunt and the distance between them is halved?

Suppose two cars A and B are moving with uniform velocities with respect to ground along parallel tracks and in the same direction. Let the velocities of A and B be 35kmh^(-1) due east and 40kmh^(-1) due east respectively. What is the relative velocity of car B with respect to A?

Places A and B are 100 km apart on a highway. One car start from A and another from B at the same time at different speeds. If the car travel in the same direction, they meet in 5 hours, if they travel towards each other, they meet in 1 hour. What are the speeds of the two cars?

Two town A and B are connected by a regular bus service with a bus leaving in either direction every T min. A man cycling with a speed of 20kmh^(-1) in the direction A to B notices that a bus goes past him every 18 min in the direction of his motion, and every 6 min in the opposite direction. What is the period T of the bus service and with what speed do the buses ply of the road?

Two electric trains run at the same speed of 72 km h^-1 along the same track and in the same direction with a separation of 2.4 km between them. The two trains simultaneously sound brief whistles. A person is situated at a perpendicular distance of 500 m from the track and is equidistant from the two trains at the instant of the whistling. If both the whistles were at 500 Hz and the speed of sound in air is 340 m s^-1 , find the frequencies heard by the person.

Two trains leave a railway station at the same time. The first train travels due west and the second train due north . The first train travels at a speed of 20 km/ hr and the second train travels at 30 km/ hr. After 2 hours, what is the distance between them ?

Two trains are travelling towards each other both at a speed of 90 km h^-1 . If one of the trains sounds a whistle at 500 Hz, what will be the apparent frequency heard in the other train ? Speed of sound in air = 350 m s^-1 .

Suppose two trains A and B are moving with uniform velocities along parallel tracks but in opposite directions. Let the velocity of train A be 40kmh^(-1) due east and that of train B be 40kmh^(-1) due west. Calculate the relative velocities of the trains.

NCERT TAMIL-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 airplance travelling at the speed of 500 km ^(-1) ejects its pr...

    Text Solution

    |

  3. A car moving along a straight highway with speed of 16 kmh^(-1) is bro...

    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 lane road , car (A) is travelling with a speed of 36 km h^(-...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  8. Read each staremnt below carefully and state with reasons and expample...

    Text Solution

    |

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

    Text Solution

    |

  10. Explain clearly, with ezamples, the difference between : (a) magnitu...

    Text Solution

    |

  11. A man walks on a straight road from his home to a moardet 3 km away wi...

    Text Solution

    |

  12. In abave questions 13 and 14, we have carefully distinguished betwee...

    Text Solution

    |

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

    Text Solution

    |

  14. Find the value of x and y from the figure.

    Text Solution

    |

  15. A police van moving on a highway with a speed of 30 km h^(-1) Fires a ...

    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...

    Text Solution

    |