toiaallen toiaallen

27-08-2017
Mathematics

contestada

100 meter long Christmas train needs 30 seconds to cross a 400nmetrr long bridge assuming the train goes at a steady speed how fast is it

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coolstick coolstick

27-08-2017

Since it's 100m long, to cross the front needs to go 500m. 500/30= (16+2/3)meters per second

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