A 1.8 m tall hiker walks away from a 9 m lamp so that the tip of the hiker’s shadow…

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

Problem

A 1.8 m tall hiker walks away from a 9 m lamp so that the tip of the hiker’s shadow is moving along the ground at 3.2 m/s. Determine the hiker’s walking speed at that instant. Express your answer in m/s.

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