(i) Uniform velocity: If a moving body covers same displacement in same time intervals, then its velocity is said to be uniform velocity.
(ii) Variable velcoity: If the displacements covered in equal time intervals are different, the velocity is said to be variable or non-uniform velocity. Velocity changes due to following two reasons:
- On changing the magnitude
- On changing the direction.
If the speed of the body is constant i.e., uniform, then its velocity will change due to change in direction.
(iii) Uniform acceleration: If the change in velocity in same time intervals is same, then the acceleration is said to be uniform acceleration and the motion of the object is said to be uniformly accelerated motion.
(iv) Variable acceleration: If change in velocity in same time intervals is different, then the acceleration is said to be variable acceleration or non-uniform acceleration.
