Aschool bus takes 20 minutes to reach school from your house. if the average velocity of the bus is 15.0 km/h to the west, the displacement from your house is:

5.0 km west

Explanation:

Velocity is the ratio between displacement and time taken for the motion:

where d is the displacement and t the time taken.

In this problem, we know:

- velocity:

- time taken:

So, we can re-arrange the formula to calculate the displacement:

and the displacement has the same direction of the velocity (to the west)