Answer:
Av = 25 [m/s]
Explanation:
To solve this problem we must use the definition of speed, which is defined as the relationship between distance over time. for this case we have.
[tex]Av=\frac{distance}{time}[/tex]
where:
Av = speed [km/h] or [m/s]
distance = 180 [km]
time = 2 [hr]
Therefore the speed is equal to:
[tex]Av = \frac{180}{2} \\Av = 90 [km/h][/tex]
Now we must convert from kilometers per hour to meters per second
[tex]90[\frac{km}{h}]*1000[\frac{m}{1km}]*1[\frac{h}{3600s} ]= 25 [m/s][/tex]
