Question

a train 150 m long is running at a speed of 90 km/ hr. Find the time taken by the train to cross a platform of length 110m.​

Answer 1

length of the train =150m

speed of the train=90km/h

therefore , we have to take the length of the platform=110m

now we have to add both the length of the train and platform then we will get the distance=150m+110m

therefore,

distance =260

now we will find time

so that ,

time =distance/speed

distance=260m

speed =90km/h

now we will change km/h into m/s

90 km/h=90×5/18

=25m/s

therefore,

=260m/25m/s

=52/5m=1.4second

Answer=1.4second