An electric train is moving north at 100mph and a wind is blowing to the west at 10mph. Which way does the smoke blow?

Well the sun rises in the east so the answer is definitely eleventy six degrees over the foxs den

Unless the motor is burning out the I doubt an electric train will be smoking

No where. "electric train" runs on energy. Unless you have that one guy that smokes everywhere in which case I would say south west

Electric train has no smoke.

SSE if a steam engine. Otherwise not.