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    Question

    A train 180 m long passes a pole in 9 seconds. What is

    the speed of the train (in km/h)?
    A 72 km/h Correct Answer Incorrect Answer
    B 84 km/h Correct Answer Incorrect Answer
    C 60 km/h Correct Answer Incorrect Answer
    D 58 km/h Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ, Speed = 180/9 = 20 m/s = 20×18/5 = 72 km/h

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