NIFT UG 2013 Question Paper with solutions

Question : 45 of 150

Marks: +1, -0

A train 150 m long is running at 40 km/h. In what time will it pass a man running at 4 km/h in the same direction in which the train is going?

Solution:

As the man is running along the direction in which train is running
So, effective speed of train

40-4=36

km/h
∴ Time of running

=\;\;{\;\text"Distance"\;}/{\;\text"Effective speed"\;}=\;\;{150×3600}/{36×1000}=15{sec}

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