gyorsulásról

Gyorsulás, in physics, refers to the rate at which an object's velocity changes over time. It is a vector quantity, meaning it has both magnitude and direction. Acceleration is the change in velocity divided by the time interval over which the change occurs. Velocity itself is a vector representing the rate of change of an object's position. Therefore, acceleration describes how this rate of motion is altered.

There are three primary ways an object can accelerate: by increasing its speed, by decreasing its speed (often referred to as deceleration or negative acceleration), or by changing its direction of motion. An object moving at a constant speed in a straight line has zero acceleration. However, an object moving in a circle at a constant speed is still accelerating because its direction of motion is continuously changing.

The SI unit for acceleration is meters per second squared (m/s²). Mathematically, acceleration (a) is calculated as the change in velocity (Δv) divided by the change in time (Δt): a = Δv / Δt. Newton's second law of motion directly relates acceleration to force and mass, stating that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (F = ma). This fundamental principle highlights the interconnectedness of force, mass, and acceleration in describing the motion of objects.