Answer:
[tex]v=\frac{5}{3}[/tex]
Explanation:
So average velocity is calculated as
[tex]average velocity=\frac{total displacement}{total time}[/tex]
Hence in our given case total displacement would be 5 m as the car moves a distance 7m to 2m.
Time taken for this moment is given to be 3 seconds.
Hence substituting back we get the average velocity as
[tex]v=\frac{5}{3}[/tex]
Hence this is the average velocity in this case.
