Question

A train is 100th long and is moving with a speed of 72 kmph . The time taken by the train to cross a bridge of length 0.5 km is

Answer 1

Answer:

30 s

Explanation:

Length of the train = 100 m

length of the bridge =0.5 km=0.5×1000=500 m

total distance =100 m+500 m=600 m

average speed =72 kmph=72×518=20 ms−1

time taken  =Total distanceAverage Speed

=60020=30 s