Question

there are two trains each has length of 500meter running in opposite direction with the speed of 40 and 0 km per hour find the time in which they c4oss each other

Answer 1

Given
Length of each train =500m

Speed of 1 train=40km/hr

Changing it in m/sec

(1km/hr =1000/3600 =5/18 m/s)

Speed of train 1=40x5/18

=200/18 m/s

Speed of 2nd train =0km/hr, 0m/s


Both trains running in opposite direction
Then speed = speed of train 1 + speed of train2

=200/18+0

=200/18m/s

Total distance = length of train 1 + length of train 2

=500+500=1000m

Time =distance /speed

=1000x18/200

=5x18

=90 seconds

=1 min 30 sec

This is ur ans hope it will help you in case of any doubt comment below