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OpenStudy (anonymous):

A tree limb of mass 12 kg falls straight down. If air resistance exerts 27 N of force on the limb as it falls, what is the net force on the tree limb? A. 15 N down B. 27 N down C. 118 N down D. 91 N down

OpenStudy (anonymous):

Gravity is providing 118N down and air resistance is providing 27N up. Almost answered.

OpenStudy (anonymous):

so, its D? @douglaswinslowcooper

OpenStudy (anonymous):

Right.

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