Final answer:
The relationship between velocity and acceleration is defined by the equation: acceleration = change in velocity / time. Acceleration can be positive, negative, or zero depending on whether the velocity is increasing, decreasing, or constant, respectively.
Step-by-step explanation:
In physics, there is a relationship between velocity and acceleration. This relationship is defined by the equation: acceleration = change in velocity / time. In other words, acceleration is the rate at which velocity changes over time.
For example, if an object starts from rest and then speeds up to a constant velocity, the acceleration is initially positive. If the object then slows down to a stop, the acceleration is negative.
Alternatively, if an object is moving at a constant velocity, the acceleration is zero because the velocity is not changing over time.
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