Question

A train cross a bridge 180 m long in 20sec but it takes 8 seconds to pass electric pole .find length of train

Answer 1

Answer:

Consider the man as a point. Let l and v be the trains length and velocity. Then:

8v=1

20v=l+180

12v=180

v=180/12=15 m/s

15 m/s x 8 s=120m as the length of the train

Step-by-step explanation:

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