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A ladder 25 ft. long is leaning against a house.

A ladder 25 ft. long is leaning against a house. At time t=0, the base of the ladder is 7 feet from the wall, and the base of the ladder starts to move away from the wall at a constant rate of 2 feet per second.

a) How far is the top of the ladder from the ground at t=0
b) How far is the base of the ladder from the wall and how far is the top of the ladder from the ground at t=4?
c) At t=8.5 secons, how far is the base of the ladder from the wall and how far is the top of the ladder from the ground?

This question was asked on May 19, 2010.

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