* Uniform motion means the body is moving at a constant speed in a straight line. This implies that both the speed and direction of the body remain unchanged.
* Acceleration is the rate of change of velocity. Velocity is a vector quantity, meaning it has both magnitude (speed) and direction.
* Therefore, if a body is moving uniformly, its velocity is not changing, and hence it cannot be accelerating.
Think of it this way: Imagine a car driving down a straight road at a steady 60 mph. The car is moving uniformly. For the car to be accelerating, it would need to either:
* Speed up: Increase its speed from 60 mph to, say, 70 mph.
* Slow down: Decrease its speed from 60 mph to 50 mph.
* Change direction: Turn left or right, even if maintaining the same speed.
In summary: Uniform motion means constant velocity, and acceleration requires a change in velocity. Therefore, a body moving uniformly cannot be accelerating.