1.

A training 50 metre crosses a railway bridge in 26 seconds at a speed of 90 km per hour.what is the length of the bridge?

Answer»

= Let length of bridge be x.= Distance traveled by train = 50 + x

= Speed = Distance / time

= Speed = 90 km/h = 90 * 5 / 18 = 25 m/s

= 25 = (50 + x) / 26

= 650 = 50 + x

= x = 600 m.



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