28 May '12 01:42>
1) A girl is swimming in the middle of a perfectly circular lake. A wolf is running at the edge of the lake waiting for the girl. The wolf is within a fence surrounding the lake, but it cannot get out of the fence. The girl can climb over the fence. However if the wolf is at the edge of the lake where the girl touches it,
then it will eat her. The wolf runs 2 times faster than the girl can swim. Assume the wolf always runs toward the closest point on the edge of the lake to where the girl is inside. Can the girl escape? If so, what path should she swim in?
2) A girl is in the centre of a circular lake. There is a wolf on the edge that runs 4 times faster than she swims. He will always take the shortest path to the closest point on the shore to your current location. How does she escape?
then it will eat her. The wolf runs 2 times faster than the girl can swim. Assume the wolf always runs toward the closest point on the edge of the lake to where the girl is inside. Can the girl escape? If so, what path should she swim in?
2) A girl is in the centre of a circular lake. There is a wolf on the edge that runs 4 times faster than she swims. He will always take the shortest path to the closest point on the shore to your current location. How does she escape?