Displacement on a Rectangular Path
A person walks around a house in a rectangular path, traveling 70 feet across the front, 30 feet along one side, 70 feet along the back, and 30 feet along the other side to return to the starting point. What is the person's displacement?
A
100 km/min
B
200 feet/min
C
70 km/min
D
140 feet/min
E
Zero
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