First, calculate each velocity:
[tex]v=\frac{distance}{time}[/tex]so:
[tex]v1=\frac{200m}{1min}[/tex][tex]v2=\frac{400m}{4min}=\frac{100m}{min}[/tex][tex]v3=\frac{800m}{10min}=\frac{80m}{min}[/tex]Now calculate the average between the 3 velocities:
[tex]av\text{ }v=\frac{200+100+80}{3}=\frac{126.67m}{min}[/tex]The answer is 126.67 m per minute.
