Question

define initial and final velocity

Answer 1

The kinematic equations describe the motion of object in terms of constant velocity or a constant acceleration. The velocity is of two types that are initial and final velocity. Theinitial velocity is the velocity at the starting point while the final velocity is the velocity at the final point of time.

Answer 2

initial velocity is represented by 'u' it means starting velocity of an object
final velocity is represented by 'v' it means the velocity of body at end point