question_answer

A passenger travels along the straight road for half the distance with velocity \[{{\text{v}}_{1}}\] and the remaining half distance with velocity\[{{\text{v}}_{1}}.\] Then average velocity is given by

A) \[{{\text{v}}_{1}}{{\text{v}}_{2}}\]    

B)        \[{{\text{v}}_{2}}^{2}/{{\text{v}}_{1}}^{2}\]

C) \[({{\text{v}}_{1}}+{{\text{v}}_{2}})/2\]                     

D) \[2\,{{\text{v}}_{1}}{{\text{v}}_{2}}/({{\text{v}}_{1}}+{{\text{v}}_{2}})\]