A 2.5-kg object falls vertically downward in a viscous medium at a constant speed of 2.5 m/s. How much work is done by the force the viscous medium exerts on the object as it falls 80 cm?

a. +2.0 J
b. +20 J
c. ?2.0 J
d. ?20 J
e. +40 J


d

Physics & Space Science

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