Question

Homing pigeons avoid flying over large bodies of water, preferring to fly around them instead. Assume that a pigeon released from a boat 10 miles from the shore of a lake (point B in the figure)flies first to point P on the shore and then along the straight edge of the lake to reach its home at L. If L is 20 miles from point A ,the point on the shore closest to the boat,and if a pigeon needs 4/3 as much energy per mile to fly over water as over land, find the location of point P, which minimizes energy used.

Point P is ____miles away from point A.

Answer 1

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