Constant velocity is defined as v(t) = k (m/s), where k is a real constant, indicating no change in speed over time. Similarly, constant acceleration is expressed as a(t) = k (m/s²), where k remains constant, signifying a uniform rate of change in velocity. In both cases, the derivative of a constant velocity results in zero acceleration, which is often referenced in Newton's Laws problems. For further understanding, a recommended tutorial is available at Physics Forums.
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