Answer:
0.4 km/h
Explanation:
Speed is defined as distance moved per unit time and can be expressed in either m/s or Km/h or miles/h
Mathematically,
[tex]s=\frac {d}{t}[/tex]
where d represent distance covered and t is time taken
Taking d as 100 m and converting it into km, we divide by 1000 hence d= 0.1 km
Time is 15 minutes and to convert to hours we divide by 60 hence 0.25 hours
Speed, [tex]s=\frac {0.1}{0.25}=0.4 Km/h[/tex]
Therefore, the speed is equivalent to 0.4 km/h
