Question

a train 360 m long running at a speed of45km/h, what time will it take to cross a 140 m long bridge ​

Answer 1

Answer:

40 seconds

Step-by-step explanation:

length = 360 m

bridge = 140 m

45 km/h = 12.5 m/s

total length = 140 + 360 = 500

Speed = distance /time

time =distance/speed

500/12.5

= 40 seconds