We have a formula for the speed v in function of s, the distance between footsteps of the same foot, and f, the length of the foot:
[tex]v=0.155s^{5\/3}\cdot f^{-7\/6}[/tex]
We can calculate v when s = 1 m and f = 0.65 m by replacing this variables with their values and solving the expression:
[tex]\begin{gathered} v=0.155(1)^{5\/3}\cdot(0.65)^{-7\/6} \\ v\approx0.155\cdot1\cdot1.653 \\ v\approx0.256 \end{gathered}[/tex]
Given the options, it corresponds to v = 0.26 m/s.
Answer: About 0.26 m/s [Fourth option]
