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A train traveling 90mph takes 4 seconds to completely enter a tunnel and 40 additional seconds to pass through the tunnel. How long is the train? How long is the tunnel?
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5 votes
A train traveling 90mph takes 4 seconds to completely enter a tunnel and 40 additional seconds to pass through the tunnel.

How long is the train?

How long is the tunnel?

User Sertorio Noronha
by
5.1k points

1 Answer

4 votes
90miles/hour
divide by 360 to convert to miles per second
multiply by 5280 to get to feet per second
multiply by number of seconds to get length (in feet) of each object
User Fuyang Liu
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