In this case, as the meanings of the vectors are opposite, one of the forces receives the negative signal and thus a piece of the other vector is drawn, as shown in the figure. And to know the module of the resultant force, if it subtracts the modules of the forces.
\(F_{Net} = F_{grav} - F_{air}\)
\(F_{Net} = 600 - 400\)
\(\boxed{F_{Net} = 200N}\)
Answer:
B. 200N
