Question

If the distance traveled by 72 km / h goes from 200 kilometers of tunnel to 25 seconds, how much is the length of the train?​

Answer 1

The speed in m/s = (72*5/18) m/s

                             =(2*5) m/s

                             = 20 m/s

In 1 second it travels 20 m

So, in 25 seconds it travels = (20*25) m

                                             = 500 m

So, the length of the train is 500 m

(Ans): 500 m.