Question

A train 125m long travels at a speed of 180km/hr crosses a bridge in 25 second.The length of the bridge is

Answer 1

answer should be 1 km

Answer 2

Answer:

Length of the bridge is 1125 m

Explanation:

It is given that,

Length of the train, x = 125 m

Speed of the train, v = 180 km/h = 50 m/s

Time taken, t = 25 s

Let l be the length of the train

We know that velocity is given by :

$v=\dfrac{total\ distance}{total\ time}$

$v=\dfrac{x+l}{t}$

$l=vt-x$

$l=50\times 25-125$

l = 1125 m

Hence, this is the required solution.