Related Rates Calculus Question
Pat walks at the rate of 5 feet per second toward a street light whose lamp is 20 feet above the base of the light. If Pat is 6 feet tall, determine the rate of change of the length of Pat's shadow at the moment Pat is 24 feet from the base of the lamppost.

Question

Related Rates Calculus Question
Pat walks at the rate of 5 feet per second toward a street light whose lamp is 20 feet above the base of the light. If Pat is 6 feet tall, determine the rate of change of the length of Pat's shadow at the moment Pat is 24 feet from the base of the lamppost.

anonymous · Answer

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anonymous · Answer

Similar triangle with s is the shadow and x is the distance from the man to the light
( s + x ) / 20     =  s / 6