Question

A train 400 m long is moving with a velocity of 500 km per hour . Find the time it takes to close the bridge which is 600 m long ​

Answer 1

Answer:

Let the length of the train be L.

Total distance cover by the engine to cross the bridge  d=400+L

Speed of train  v=30 m/s

Time taken   t=20 s

Using    d=vt

or    400+L=30×20

⟹ L=200 m

Answer 2

Answer:

138.89 seconds OR 2 x 10 ^ - 2 hrs

Explanation:

Answer is in the picture.

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