Here's why:
* Uniform motion means an object is moving at a constant speed in a straight line.
* Instantaneous velocity is the velocity of an object at a specific moment in time.
* Average velocity is the total displacement divided by the total time taken.
Since the object is moving at a constant speed and direction in uniform motion, its instantaneous velocity remains the same throughout the entire motion. Therefore, the average velocity, calculated over any time interval, will be the same as the instantaneous velocity at any point in time.