1. To get to school, a girl walks 1 km North in 15 minutes. She then walks 200 m South-west in 160 seconds.
What is the girl's average velocity for her walk to school?

The girl's average velocity is 1.13 m/s

The formula used to determine average velocity is:

This means to determine the girl's average velocity is necessary to find out the total distance and the total time.

Distance:

As you can see there are two different distances and they are in different units (meters vs kilometers), let's convert the kilometers to meters so both distances are in the same unit.

Add the two distances:

Time

Let's convert the minutes into seconds:

Add the time:

Finally, calculate the average velocity:

Learn more about velocity in: link

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