Question

A train of the length 50m is moving with a constant speed of 10m/s calculate the time taken by the train to cross an electric pole and a bridge of length 250m.

Answer 1

distance= 50m

speed = 10m/s

time =distance/speed

time = 50/10=5

hence it will take 5s to cross an electric post

when it crosses 50m in 5s then 250/50=5

then it takes 5 times that of 5s

it will take 25s

Answer 2

Hello mate..

Here Is Your Answer:

GIVEN:

Length of the train = s = 50m.

Speed of the train = v = 10m/s.

Therefore,

time taken to cross the electric pole:

$\bold{t = \frac{s}{v} = \frac{50}{10}} \\ \bold{ = 5s}$

Distance travelled while crossing the bridge

→length of train + lenght of the bridge.

=> 50 + 250 = 300m.

Time taken to cross the bridge

$\bold{=> \frac{300m}{10m/ s} } \\ \bold{ = 30 \: seconds.}$

HOPE THIS HELPS YOU..