Home
Class 11
PHYSICS
A train of 100 m length moves with 40 m/...

A train of 100 m length moves with 40 m/s and overtakes another train of 200 m length moves with `30 ms^(-1).` Time taken by `1^(st)` train to overtake another train is ......

A

30 s

B

40 s

C

50 s

D

60 s

Text Solution

Verified by Experts

The correct Answer is:
A
Relative velocity `= 40 - 30 = 10 ms ^(-1)`
Distance covered before overtake
`= 100 + 200 = 300 m`
`therefore ` Time taken to overtake `= ("distance")/("relative velocity") = (300)/(10)=30s`
Promotional Banner

Topper's Solved these Questions

  • MOTION IN A STRAIGHT LINE

    KUMAR PRAKASHAN|Exercise SECTION-F|20 Videos

  • MOTION IN A STRAIGHT LINE

    KUMAR PRAKASHAN|Exercise QUESTION PAPER|11 Videos

  • MOTION IN A STRAIGHT LINE

    KUMAR PRAKASHAN|Exercise SECTION-D|26 Videos

  • MECHANICAL PROPERTIES OF FLUIDS

    KUMAR PRAKASHAN|Exercise QUESTION PAPER (SECTION -C)|3 Videos

  • OBJECTIVE QUESTIONS AS PER NEW PAPER STYLE

    KUMAR PRAKASHAN|Exercise CHAPTER - 8 (Match Type questions)|5 Videos

Similar Questions

Explore conceptually related problems

Train A 120 m long is moving with 20 m/s. Train B 130 m long is moving with 30 m/s in opposite direction. In what time, train B will cross train A?

A 210 meter long train is moving due north at a of 25 m/s. a small bird is flying due south a little above the train with speed 5 m/s. The time taken by the bird to cross the train is

A train of length 50m is moving with a constant speed of 10m/s. Calculate the time taken by the train to cross an electric pole and a bridge of length 250 m. (5s , 30s) (AS_(1))

A 200 m long train is moving with a velocity of 20 m/s, then find out the time taken by train to cross a bridge of length 150 m.

A train of 150 m length is going toward north direction at a speed of 10 ms^-1 . A parrot flies at a speed of 5 ms^-1 toward south direction parallel to the railway track. The time taken by the parrot to cross the train is equal to.

On a train moving along east with a constant speed v, a boy revolves a bob with string of length l on smooth surface of a train, with equal constant speed v relative to train. Mark the correct option(s).

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 ?

Give the magnitude and direction of the net force acting on a stone of mass 0.1 kg, (a) just after it is dropped from the window of a stationary train, (b) just after it is dropped from the window of a train running at a constant velocity of 36 km/h, (c ) just after it is dropped from the window of a train accelerating with 1 m s^(-2) , (d) lying on the floor of a train which is accelerating with 1 m s^(-2) , the stone being at rest relative to the train. Neglect air resistance throughout.

A 100 m long train is moving with a velocity of 10 m/s, then find out the time taken by train to cross a bridge of length 150 m.

L_(1) metre train is moving with a velocity of v_(1) m/s and another L_(2) metre train is moving with a velocity of v_(2) m/s in opposite direction. Find out The time taken by two train to cross each other

KUMAR PRAKASHAN-MOTION IN A STRAIGHT LINE -SECTION-E
  1. A ship A is moving Westwards with a speed of 10 km h^(-1) and a ship ...

    Text Solution

    |

  2. A particle of unit mass undergoes one dimensional motion such that its...

    Text Solution

    |

  3. Two stones of masses m and 2 m are whirled in horizontal circles, the ...

    Text Solution

    |

  4. Two cars P and Q start from a point at the same time in a straight lin...

    Text Solution

    |

  5. Find the area of a square inscribed in a circle of radius 8 cm.

    Text Solution

    |

  6. A stone falls freely under gravity. It covers distances h(1), h(2) and...

    Text Solution

    |

  7. In an n type silicon, which of the following statements is true:

    Text Solution

    |

  8. The displacement of object is proportional to cube of the time, then a...

    Text Solution

    |

  9. When a man walks he waves his hands, because……….

    Text Solution

    |

  10. If A and B are invertible matrices, then which of the following is not...

    Text Solution

    |

  11. Which of the following statement is correct ?

    Text Solution

    |

  12. Mass of an object is 2 kg and mass of another object is 4 kg. Size of ...

    Text Solution

    |

  13. Which of the following statement is correct ?

    Text Solution

    |

  14. A train of 100 m length moves with 40 m/s and overtakes another train ...

    Text Solution

    |

  15. A bullet is fired into a huge wooden block. The bullet while moving in...

    Text Solution

    |

  16. Speeds of two identical cars are u and 4u at a specific instant. The r...

    Text Solution

    |

  17. A ball is fallen freely from top of tower of height 100 m and another ...

    Text Solution

    |

  18. If the displacement at time 't' is x = acost, the acceleration is .......

    Text Solution

    |

  19. The below shown graphs represent the same motion. But one of them is i...

    Text Solution

    |

  20. Due to which the surface charge density arises on the surface of a die...

    Text Solution

    |