A Ladder 10 Feet Long Is Leaning Against a Wall $6 \mathrm { tt } / \mathrm { s }$

question 139

Multiple Choice

A ladder 10 feet long is leaning against a wall. If the top of the ladder is sliding down the wall at 4 feet per second, how fast is the foot of the ladder being pulled away from the wall when the foot of the ladder is 8 feet away from the wall?

• A) \(6 \mathrm { tt } / \mathrm { s }\)
• B) \(1 \mathrm { ft } / \mathrm { s }\)
• C) \(3 \mathrm { ft } / \mathrm { s }\)
• D) \(10 \mathrm { ft } / \mathrm { s }\)
• E) \(5 \mathrm { ft } / \mathrm { s }\)
• F) \(8 \mathrm { ft } / \mathrm { s }\)
• G) \(2 \mathrm { ft } / \mathrm { s }\)
• H) \(4 \mathrm { ft } / \mathrm { s }\)

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