Question

A train 100 m in length is running
at a speed of 72 km/h. What is the
time taken by the train to cross a
bridge of length 525 m?​

Answer 1

Answer:

31.25 s

Step-by-step explanation:

According to the given question,

v = velocity = 72 km/h = 72×1000/3600 = 20 m/s

d = length of bridge = 525 m

l = length of train = 100 m

And we are asked to find the time taken by the train to cross the bridge.

Here,

s = distance = 525+100 = 625 m; is the total distance that train has to cover to cross the bridge.

We know,

• distance = velocity×time

• time = distance/velocity

Putting the values we get,

• time = 625/20

• time = 31.25 sec

Thus time taken by the train to cover the bridge is 31.25 sec.

Answer 2

$\huge \red {Answer} \:$

31.25