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:

Velocity = distance/ timeV = D/t

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

Distance:

1 km north and 200 m Southwest

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.

1  x 1000 = 1000 (1 km = 1000 meters)

Add the two distances:

1000 meters + 200 meters = 1200 meters

Time

15 minutes and 160 seconds

Let's convert the minutes into seconds:

15 x 60 = 900

Add the time:

900 + 160 = 1060

Finally, calculate the average velocity:

1200 meters / 1060 seconds = 1.13 meters per second

Learn more about velocity in: link

Is there a picture to go along with this

Answer: it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.explanation:   we have equation of motion ,where s is the displacement, a is the acceleration, u is the initial velocity and t is the time taken.average velocity = displacement/ time taken.average velocity = 10.69 miles/hr = 10.69*1.6*1000/(60*60) = 4.75 m/s4.75 = s/ts = 4. 1we also have acceleration = 2.18 m/s², initial velocity = 0 m/sso it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.