This question involves the concepts of average velocity and displacement.
The average velocity of the car is "60 mi/hr (north)".
AVERAGE VELOCITY:
The average velocity of a car can be defined as the rate of change of displacement of the car:
- Displacement = 40 miles (north)
- Time = 4 hr
[tex]Average\ Velocity=\frac{Displacement}{Time}\\\\
Average\ Velocity=\frac{240\ mi\ (North)}{4\ hr}[/tex]
Average Velocity = 60 mil/hr (North)
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