A truck moves 80.0 m east,then moves 140.0 m west,and finally moves east again a distance of 80.0 m.If east is chosen as the positive direction,what is the truck's resultant displacement?
A) 20.0 m
B) -20.0 m
C) 300.0 m
D) -300.0 m
E) 140.0 m
Correct Answer:
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