The magnitude of the drag force on a 20.0-kg object is proportional to its speed. The object has a terminal velocity 80 m/s. What is the magnitude of the drag force on the object when it is falling with a speed 30 m/s?
A)
196 N
B)
7.50 N
C)
15.0 N
D)
73.6 N
E)
42.7 N
D
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