Question

Fond out the length of bridge which a train 180m long and travelling at 27km/hr can cross in 50 sec

Answer 1

first.
27×5/18=7.5mps
total distance= lenght of train+lenght of bridge
= 180+ x
$speed = \frac{dis}{time}$
7.5= 180+x/50
375=180+x
375-180=x
195m=length of bridge

Answer 2

Answer:

The length of the bridge is 195m

Step-by-step explanation:

Given that the speed of train=27km/h

Converting it into m/s we get speed

$= 27 \times \frac{5}{18} m/s = 7.5m/s$

Time taken is given as 50 seconds.

Also given that length of train=180m

Let the length of bridge be 'x' m

Total distance covered is

$(180 + x)m$

We know that,

Distance= Speed x Time

$180 + x = 7.5 \times 50 = 375 \\ = > x = 195m$

Therefore,the length of the bridge is 195m

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