How many seconds will a 500 m long train take to cross a man walking with a speed of 3 km/hr in the direction of the moving train if the speed of the train is 63 km/hr?

One Answer on this Question

1. speed of the train respect to man
   = (63 – 3) km/hr
   = 60 km/hr
   = 60 * 1000 / 3600 m/sec
   = 50/3 m/sec

   time
   = distance/speed
   = 500 * 3/ 50
   = 30 sec

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