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Solved: Pelicans tuck their wings and free-fall straight
Chapter 2, Problem 63GP(choose chapter or problem)
Pelicans tuck their wings and free-fall straight down when diving for fish. Suppose a pelican starts its dive from a height of and cannot change its path once committed. If it takes a fish to perform evasive action, at what minimum height must it spot the pelican to escape? Assume the fish is at the surface of the water.
Questions & Answers
QUESTION:
Pelicans tuck their wings and free-fall straight down when diving for fish. Suppose a pelican starts its dive from a height of and cannot change its path once committed. If it takes a fish to perform evasive action, at what minimum height must it spot the pelican to escape? Assume the fish is at the surface of the water.
ANSWER:
Step 1 of 3
A pelican is at from the fish at the surface of the water. As stated in the question, it will take for the fish to evade the pelicans attack. Hence its logical to assume that the fish must spot the predator before.