Question

define uniform velocity, uniform acceleration, average velocity and instantaneous velocity

Answer 1

uniform velocity-the distance covered by a body with equal respect to time and turning with same velocity.
instantaneous velocity- the velocity of an object to start immediately is called instantaneous velocity.

Answer 2

In physics, motion is the change in position of an object with respect to its surroundings in a given interval of time. Motion is mathematically described in terms of displacement, distance, velocity, acceleration, and speed. ... An object's motion cannot change unless it is acted upon by a force.