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Problems On Train :

3.  Time taken by a train of length l metres to pass a pole or a standing man or a signal post is  
      equal to the time taken by the train to cover l metres

4.  Time taken by a train of length l metres to pass a stationary object of length b metres is the
     time taken by the train to cover (l + b) metres

5.  Suppose two trains or two bodies are moving in the same direction at u m / s and v m /s,
     where u > v, then their relatives speed = (u - v) m / s.

6.  Suppose two trains or two bodies are moving in opposite directions at u m / s and v m / s, then
     their relative speed is = (u + v) m /s

7.  If two trains of length a metres and b metres are moving in opposite directions at u m / s and

 

8.  If two trains of length a metres and b metres are moving in the same direction at u m / s and

 9.  If two trains (or bodies) start at the same time from points A and B towards each other and
     after crossing they take a and b sec in reaching B and A respectively, then 

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