Answer:
5.0 km west
Explanation:
Velocity is the ratio between displacement and time taken for the motion:
[tex]v=\frac{d}{t}[/tex]
where d is the displacement and t the time taken.
In this problem, we know:
- velocity: [tex]v= 15.0 km/h[/tex]
- time taken: [tex]t=20 min=\frac{1}{3}h[/tex]
So, we can re-arrange the formula to calculate the displacement:
[tex]d=vt=(15.0 km/h)(\frac{1}{3}h)=5.0 km[/tex]
and the displacement has the same direction of the velocity (to the west)
