Question

"A train 100 m in length is running at a speed of 72 km/h What is the time taken by the train to cross a bridge of length 525"​

Answer 1

Answer: 31.25 s

Step-by-step explanation:

Length of the train = 100m

Length of the bridge  525m

Therefore, the total distance that the train should cover = 100 + 525

                                                                                                  = 625m

Speed of train = 72km/hr

Multiplying with 5/18 to convert km/hr to m/s

ie, 72 x 5/18 = 4 x 5 = 20m/s

We know that, time = distance/speed

                                  = 625/20

                                  = 31.25 seconds

HOPE THIS HELPS.....

Answer 2

Answer:31.25

Step-by-step explanation:

72 km/hr in m/sec = 72*1000/3600

= 20m/sec

distance= 525m

length= 100m

=525+100m = 625m

625/20 = 31.25

= 31.25

Hope its help you

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