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From: scottp@tekig1.UUCP (Scott Phillips)
Newsgroups: net.puzzle
Subject: Re: a good interview question (the solution)
Message-ID: <1865@tekig1.UUCP>
Date: Wed, 13-Mar-85 17:55:04 EST
Article-I.D.: tekig1.1865
Posted: Wed Mar 13 17:55:04 1985
Date-Received: Sat, 16-Mar-85 03:21:55 EST
References: <302@ssc-bee.UUCP> <463@petsd.UUCP>
Organization: Tektronix, Beaverton OR
Lines: 24

> Distribution:
> Organization: Perkin-Elmer DSG, Tinton Falls, N.J.
> Keywords:
> 
> In article <302@ssc-bee.UUCP> thill@ssc-bee.UUCP (Tom Hill) writes:
> >	You have to travel from town A. to town B.   The distance
> >	between the two towns is 2 miles.  If you drive 30 mph for the
> >	first mile, how fast do you have to drive the second mile in
> >	order to average 60 mph?
> >
> >It can be tricky if you don't think about it.
> 
> Your right about that.  I thought about it and here is the answer:
> 
> 	It can't be done.
> 
> Explanation: In order to average 60 mph, you must travel 1 mile in 1 minute.
> Therefore, you must travel the 2 miles in 2 minutes.  But, you have already
> taken 2 minutes to travel the first mile, so even if you go "faster than
> greased lightning" in the second mile, you won't make the 60mph average.

ah, but if you exceed the speed of light, you can stop the advance of time
(relative to you).  For that matter, you can arrive yesterday, the day before,
or the year before; dependent on how much you exceeded the speed of light.