Answer:
The velocity of the bus be is 0 miles/second
Explanation:
Given, a bus travelled a distance of 20 miles north and 20 miles back to the starting point
Hence, total distance = 20 + 20 = 40 miles
Velocity is calculated by the formula:
Velocity = [tex]\frac{\text { Displacement }}{\text { Time }}[/tex]
Displacement = [tex]20+(-20)=0 \text { miles }[/tex]
Velocity = [tex]\frac{0}{T i m e}=0 \text { miles/second }[/tex]
Therefore, the velocity of the bus is 0 miles/second