Answer:
3529 km/h west
Explanation:
The average velocity is given by:
[tex]v=\frac{d}{t}[/tex]
where
d is the displacement
t is the time taken
For the plane in this problem, we have:
[tex]d=15.0 km[/tex]
[tex]t=15.3 s \cdot \frac{1}{3600 s/h}=0.00425 h[/tex]
Therefore, substituting into the formula,
[tex]v=\frac{15.0}{0.00425}=3529 km/h[/tex]
and the direction is the same as the displacement (west).
