Question

define uniform and non uniform acceleration motion

Answer 1

Uniform Acceleration   :    
            
⇒An Object is said to move in uniform acceleration, if velocity increases  in equal intervals of time.
For example :
A free fall object posses uniform acceleration.

non Uniform acceleration:

⇒An object is said to be with non uniform acceleration if velocity of object changes by unequal amounts in equal intervals of time.
Examples :
All Circular motion type where speed is constant and direction changes at every point.

Answer 2

UNIFORM ACCELERATION :

velocity of an object increase or decrease by equal amounts in equal interval of time.

NON-UNIFORM ACCELERATION :

Velocity of an object increases or decreases by unequal amount in equal intervals of time.