Daniel Morgan <damorgan_at_x.washington.edu> wrote in message news:<1079077451.572264_at_yasure>...
22.8 miles. Too easy to use Oracle for it. However, bird is too slow
even to keep line with the east going train, so probably something is
wrong in the challenge.
--
Dusan Bolek
> Gave this one to my students tonight.
>
> There are two solutions ... one easy and one that requires coding
> a function. Can you find them both?
>
> "Train 1" leaves station A heading east at 10:00am, "Train 2" leaves
> station B heading west at the same time. The two trains are moving
> towards each other on the same track and are 114 miles apart.
>
> The trains move at a constant 50 miles per hour. There is a bird perched
> on "Train 1". The bird begins to fly east as soon as "Train 1" begins
> to move. The bird flys at a constant 20 miles per hour and flies back
> and forth between "Train 1" and "Train 2" as the trains approach each
> other. The bird has perfect recoil (it spends 0 time perched on either
> train and experiences no acceleration and no deceleration). How many
> miles does the bird fly before the trains collide?
>
> And since my students got this first: Yes the bird is dimensionless.
Received on Fri Mar 12 2004 - 06:29:54 CST
