A train crosses an electric pole in 5 seconds and a railway bridge is 600 m long in 35 seconds. Find the speed of the train in km/h. and the length of the train?
Answers
Answered by
7
Step-by-step explanation:
Train crosses an electric pole in 5 sec
time to crosses the tunnel = 20 sec
formula used :
speed = distance / time
Calculation :
The length of the tunnel be x m and the length of the best be y m
Time = distance / speed
5 = ( y / 90)
y = 450 m
Time to crosse the tunnel = Distance / Speed
20= ( y + x ) / 90
20 × 90 = ( 450 + x )
x = 1800 - 450 = 1350
The length of the tunnel is 1350
plz mark me as briliant :)
Similar questions