A squirrel runs north at $12$ km$/$hr for $2\mathrm{.}5$ min, then south at $14$ km$/$hr for $5\mathrm{.}5$ min, and then north at $11$km$/$hr for $3\mathrm{.}1$ min north is the positive direction.

A$)$ what is the average velocity in m$/$s$?$

$$B$)$ what is the average speed in m$/$s$?$ 

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