CBSE Class 9 Answered
A train 100 m long travelling at 40 m/s,overtakes another train 200 m long travelling at 30 m/s.Find the time taken by the first train to overtake the second train ?
Asked by gpnkumar0 | 27 Jun, 2016, 08:36: PM
Expert Answer
Relative velocity of overtaking is the difference of the speed with whihc the trains are moving. That is
Relative velocity = 40 m/s - 30 m/s = 10 m/s
In order to overtake, the first train has to cover a distance of the sum of the lengths of both the train.
That is the total distance covered with this relative velocity during overtaking will be = 100 m + 200 m = 300 m
Answered by Yashvanti Jain | 28 Jun, 2016, 11:47: AM
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