A sliding ladder A 3.9-m ladder is leaning against a house when its
base starts to slide away (see accompanying figure). By the time the
base is 3.6 m from the house, the base is moving at the rate of 1.5 m/s.
a. How fast is the top of the ladder sliding down the wall then?
b. At what rate is the area of the triangle formed by the ladder,
wall, and ground changing then?
c. At what rate is the angle between the ladder and the ground
changing then?
-3,6 m/s
-5.355 m/s
-1 rad/5*
*
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