Answer:
96.5 km/h south
Explanation:
The average velocity is given by:
[tex]v=\frac{d}{t}[/tex]
where
d is the displacement
t is the time
We have:
d = 55 km
[tex]t = 34 min \cdot \frac{1}{60}=0.57 h[/tex]
Therefore, the average velocity is
[tex]v=\frac{55}{0.57}=96.5 km/h[/tex]
And the direction is the same as the  displacement (south)