Sebességváltozás

Sebességváltozás refers to the change in velocity of an object. Velocity is a vector quantity, meaning it has both magnitude (speed) and direction. Therefore, a change in velocity can occur in two ways: a change in the object's speed or a change in its direction of motion, or both. The rate at which this velocity change occurs is known as acceleration.

In physics, sebességváltozás is a fundamental concept in kinematics, the study of motion. It is directly related to the forces acting on an object according to Newton's second law of motion, which states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. This means that a net force applied to an object will cause its velocity to change.

Examples of sebességváltozás are abundant in everyday life. When a car speeds up, slows down, or turns a corner, its velocity is changing. A thrown ball experiences sebességváltozás as gravity acts upon it, altering its trajectory and speed. Even a satellite in orbit, maintaining a constant speed, is undergoing continuous sebességváltozás because its direction of motion is constantly changing. Understanding sebességváltozás is crucial for analyzing and predicting the motion of objects in various physical scenarios, from simple projectile motion to complex celestial mechanics.