Question 52050
The goods train passes him at the com bined rates of both trains, or
72 + 45 = 126 km/hr
If the train passes in 8 sec, the length of the train is (126 km/hr)(8 sec)
There are 3600 sec in an hour 126 km/3600 sec * 8 sec = 126/450 km
That equals 126000/450 meters = 280 meters long