Question

Uniform motion needs the concept of velocity while non uniform motion needs the concept of acceleration. Why..??

Explain me briefly.

Answer 1

In uniform motion, the velocity must be constant (it could also be said that the acceleration must be `0`).

Non uniform motion requires some acceleration, either positive or negative (it could also be said that the velocity changes).

Does this help???

Answer 2

Uniform motion means that the body's acceleration is zero. Non-uniform motion means that the body's acceleration is non-zero.