A superfast Duronto express running at 90 kmph overtakes a bike miming at 36 kmph in 25 seconds. What is the length of the train in meters?
Speed of Duronto express = 90 km/h
= 90 × $$\frac{5}{18}$$
= 25 m/s
Speed of Bike = 36 km/h
= 36 × $$\frac{5}{18}$$
= 10 m/s
Now relative speed of Train with respect to Bike
= 25 - 10
= 15 m/s
Now as time is 25 sec
=> Distance travelled by last compartment of train to overcome the bike .
= $$Relative speed \times time$$
= $$15\times 25$$
= 375 m
So length of train
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