A 10-ft ladder leans against a vertical wall

MATHEMATICS · Subjective · AP · Calculus AB · Contextual Applications of Differentiation · Contextual Applications of Differentiation

Problem

A 10-ft ladder leans against a vertical wall. At the instant when the foot of the ladder is 6 ft from the wall and sliding directly away from the wall at 3 ft/s, determine the instantaneous rate (with sign) at which the top of the ladder is moving. State units.

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