What is the acceleration of uniformly accelerated motion?

It is a measure of the change in speed over time. Because the motion is uniformly accelerated (equally slowed down), then the speed per unit of time changes in the same way, i.e. with some constant value, which is called the acceleration (positive or negative) of the motion. The speed is not constant, it changes the same way over the same time intervals, so the movement is uniformly accelerated or equally slowed down.

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