Solve the given problem:
 
A particle moves along the sides \(AB\), \(BC\), \(CD\) of a square of side \(26\ m\) with a constant speed of \(16\ ms^{–1}\). Its average velocity is
 
YCIND_231211_5844_3.png
 
Its average velocity is ________ \(\farc{m}{s}\)