A body is moving along a straight line with a constant acceleration and has velocities 6m/s and 8 m/s at points A and B of its path. Find the velocity at mid point of AB

Question

$$(a)\;7 m/s \quad (b)\;6.5 m/s \quad (c)\;5 \sqrt 2 m/s\quad (d)\;6 \sqrt 2 m/s$$