Physics

Problem

A cyclist rides from point A to point B along a straight road and immediately returns to A along the same path, taking equal time for each half of the journey. Which statement correctly describes her average speed

v_{\text{avg}}

and average velocity

\bar v

for the complete trip? a) Both

v_{\text{avg}}

and

\bar v

are zero. b)

v_{\text{avg}}

is zero, while

\bar v

is positive towards

B

. c)

v_{\text{avg}}

is positive, while

\bar v

is zero. d)

v_{\text{avg}}

is positive, while

\bar v

is negative towards

A

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