Question

a train is moving on straight levelled track at speed of 54 km/h and passes and electric pole in 2 secs. find the time taken to pass a 570 m bridge​

Answer 1

Explanation:

I think so

may be 32 secs is come if we take distance as 540m

Answer 2

Given:

The speed of the train s= 54 Km/hr

The time taken t= 2 sec

The distance of bridge is d= 570

To find:

The time taken to pass the bridge

Solution:

The speed of the train is

s= 54 Km/hr= 15 m/sec

The distance covered then

d'= 15×2

=30 m

Total distance covered d= 570+30

d=600 m

The time taken is

t=600/15

t=40 sec

So, the time taken to cover the distance of bridge is 40 sec