Numerical - Length of train for particular speed

Q.  What is the length of a train which crosses a bridge of 150 m in 20 sec with a speed of 40 km/h?
- Published on 18 Sep 15

a. 222 m
b. 150 m
c. 72.2 m
d. 70.5 m

ANSWER: 72.2 m

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    Discussion

  • Shaukat   -Posted on 06 Jan 20
    In the above equation: Speed = velocity x time
    Please replace Speed with distance. As
    distance = velocity x time (S=vt)
  • Sravanthi   -Posted on 15 Dec 15
    Solution:

    Assume length of train = y, velocity = 40 km/h = 11.11 m/s

    Speed = velocity x time

    y + 150 = 11.11 x 20

    y = length of train = 72.2 m

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