Science Help Not sure
posted by Emmanuel .
Within the Gaetz Lake Sanctuary in Red Deer, Alberta, is a looped trail that is 4 km long. Suppose a person walked all the way around the looped trail in 1 h, ending where he or she started. Which statement best describes this person’s motion over this time interval?
A.The person moved with an average speed of 0 and an average velocity of
+ 4 km/h.
B.The person moved with an average speed of  4 km/h and an average velocity of  4 km/h.
C.The person moved with an average speed of 4 km/h and an average velocity of 0.
D.The person moved with an average speed of 4 km/h and an average velocity of + 4 km/h.
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