Question

Ann walked 1.5 miles south to her house in 0.5 hours. What is Ann's speed and velocity?

Answer 1

Ann's speed is `"3 mi/h"`. Her velocity is `"3 mi/h south`.

Explanation:

`v=(Deltad)/(Deltat)`, where `v` is velocity, `Delta d` is displacement, and `Deltat` is time interval.

Substitute the known values into the equation.

`v=(1.5"mi")/(0.5"h")="3 mi/h"` (without direction, this is her speed)

The direction given was south, so Ann's velocity is `"3 mi/h south"`.