Question
A train overtakes a scooterist who is moving in the same
direction at 36 km/h. If the train takes 18 seconds to pass the scooterist and its speed is 2.5 times that of the scooter, what is the length of the train?Solution
ATQ,
Speed of the scooter = 36 × (5/18) = 10 m/s
So, speed of the train = 10 × 2.5 = 25 m/s
Let the length of the train be 'x' metres
ATQ:
x / (25 - 10) = 18
So, x = 270
Length of the train = 270 metres
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