Lendületmegmaradás

Lendületmegmaradás is the Hungarian term for the principle of conservation of momentum. This fundamental law of physics states that in a closed system, the total momentum remains constant over time. Momentum is a vector quantity defined as the product of an object's mass and its velocity. Therefore, if no external forces act on a system, the vector sum of the momenta of all objects within that system will not change.

This principle applies to various scenarios, from collisions between particles to the motion of rockets. For example, in a collision where two objects interact, the momentum lost by one object is gained by the other, ensuring the total momentum of the system before and after the collision is the same. Similarly, when a rocket expels fuel at high velocity, the momentum of the expelled fuel in one direction results in an equal and opposite momentum for the rocket, propelling it forward.

The conservation of momentum is a direct consequence of Newton's third law of motion, which states that for every action, there is an equal and opposite reaction. When two objects interact, they exert equal and opposite forces on each other. These forces, acting over the same time interval, produce equal and opposite changes in momentum, thus conserving the total momentum of the system. This principle is crucial in understanding and predicting the behavior of physical systems in classical mechanics and beyond.