Püsikiirendus

Püsikiirendus, also known as constant acceleration, refers to a state of motion where an object's velocity changes by a uniform amount over equal intervals of time. This means the acceleration is constant and non-zero. In such a scenario, the speed of the object increases or decreases linearly with time.

The fundamental equations of motion, often called kinematic equations, are used to describe motion with constant acceleration. These equations relate displacement, initial velocity, final velocity, acceleration, and time. For instance, one key equation states that final velocity equals initial velocity plus acceleration multiplied by time (v = u + at). Another relates displacement to initial velocity, time, and acceleration (s = ut + 1/2at^2).

A common example of püsikiirendus is free fall under the influence of gravity, neglecting air resistance. Near the Earth's surface, objects in free fall experience a nearly constant acceleration downwards. Another everyday example is a car accelerating uniformly from rest at a traffic light. The speed of the car increases steadily as time progresses.

Understanding püsikiirendus is crucial in physics for analyzing projectile motion, the behavior of objects under gravity, and many mechanical systems. It forms a foundational concept for more complex motion analyses.