Question

A school 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:

Answer 1

5.0 km west

Step-by-step explanation:

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

`v=(d)/(t)`

where d is the displacement and t the time taken.

In this problem, we know:

- velocity:
`v= 15.0 km/h`

- time taken:
`t=20 min=(1)/(3)h`

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

`d=vt=(15.0 km/h)((1)/(3)h)=5.0 km`

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