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Question

A person travels along a straight road for the first half time with a velocity v1 and the second half time with a velocity v2. Then, the mean or average velocity ¯v is given by

A
¯v=v1+v22
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B
2¯v=1v1+1v2
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C
¯v=v1v2
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D
¯v=v2v1
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