Manipal Entrance Test 2013 Physics Paper

Average velocity is equal to ratio of total displacement to total time. Velocity is a vector quantity and average velocity is defined as the total displacement undergone by the body per unit time,
Displacement in first instance =v1t
Displacement in second instance =v2t
∴ Average velocity =

v1t+v2t

t+t

=

v1+v2

2