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The Base of a 52-Ft Ladder Leaning Against a Wall

Question 190

Multiple Choice

The base of a 52-ft ladder leaning against a wall begins to slide away from the wall. At the instant of time when the base is 48 ft from the wall, the base is moving at the rate of 9 ft/sec. ​
How fast is the top of the ladder sliding down the wall at that instant of time?


A) 20.9 ft/sec
B) 21.6 ft/sec
C) 26.5 ft/sec
D) 17.2 ft/sec

Correct Answer:

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