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Brakes are applied to a train travelling at `72 km//h`. After passing over `200m`, its velocity reduces to `36 km//h`. At the same rate of retardation, how much further will it go before it is brought to rest ?

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The speed of a train is reduced from 36 km//h to 9 km//h whilst it travels a distance of 50 metres, if the retardation be uniform, how much further it will travel before coming to rest ?

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Knowledge Check

  • A train is travelling at a speed of 90 km//h . Brakes are applied so as to produce a uniform acceleration of - 0.5 m//s^(2) . Find how far the train will go before it is brought to rest.

    A
    484 m
    B
    250 m
    C
    625 m
    D
    400 m

  • If a train travelling at 72 km/h is to be brought to rest in a distance of 200m, then its retardation should be:-

    A
    `20 m//s^(2)`
    B
    `2m//s^(2)`
    C
    `10 m//s^(2)`
    D
    `1 m//s^(2)`

  • A train passes telegraph post in 40s moving at a rate of 36 km/h. Then, the length of the train is

    A
    400 m
    B
    500 m
    C
    450 m
    D
    395 m

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    The driver of a train travelling at 115 km/hour sees on the same track 100 m in front of him a slow train travelling in same direction at 25 km/hr. The least retardation that must be applied to the faster train to avoid a collision will be-

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