Length Of The LHB Coaches In Bhopal Shatabdi = 23.54m
Total No. Of LHB Coaches = 17
Length Of WAP5 Engine = 18.16m
Distance Between Two Coaches = 1.0m(approx.)
Total Length Of The Train =...
more... 23.54*17 + 17*1.0 + 18.16 = 435.34m
Time Take By Train To Cross = 10.25 seconds
Therefore , Speed Of The Train = (435.34/10.25)*3.6(to convert into km/hr) = 152 km/hr (approx)
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No magic, just simple mathematics!! :)