Speed = [tex]\frac{distance}{time}[/tex]
distance = 0.9 * 1000 = 900 metres, because speed is measured in m/s so the km has to be converted to m
time = 1.5 * 60 = 90 seconds , because speed is measured in m/s so the time in minutes(m) has to be converted to seconds(s)
Speed = [tex]\frac{900}{90}[/tex]
= 10m/s
