Question

e) a train 200m
with a speed
long moving
90km/h. In what time does it cross a
bridge of length of 2 km ?​

Answer 1

For the whole train to get across the rear of it must go 150 m before it gets to the bridge and cross the 200 m of the bridge. So the rear will travel 350 m until the whole train has crossed.

350 m at 90 km per hour is

.35 km / 90 kph which calculates to

14 seconds