Question

A train 270 m long is running at 80 km/hr. How much time will it take to cross a bridge 130 m long ?

Answer 1

Hola

Here is your answer

Given data - A train 270m long is crossing a bridge of 130m

Speed = 80km/hr

To find - Time it will take to cross 130m bridge.

Calculation - Will take total distance as

270 + 130 = 400m

Speed = distance / time

80km/hr will convert km/hr to m/s

thus, will multiply by 5/18

80 × 5 / 18

= 400/18

=22.22m/s

thus,

22.22 = 400/t

22.22t = 400

t = 400/22.22

=18.00 seconds.


Answer - 18 seconds.

Answer 2

i think 2 minutes because the train is 270 m long that means take some time to reach the another end of the bridge.