What is momentum?

Momentum is a concept in physics that refers to the quantity of motion an object has. It is a vector quantity, meaning it has both magnitude and direction. It is calculated by multiplying an object's mass by its velocity.

According to the law of conservation of momentum, the total momentum of a closed system remains constant, provided there are no external forces acting on it. This means that if two objects collide with each other, their total momentum before the collision will be equal to their total momentum after the collision, as long as no external forces are present.

Momentum is an important concept in understanding the motion of objects, particularly in collisions and interactions between objects. In sports, momentum is often used to describe a team or player's motivation and success in a game. It is also crucial in engineering and design, where momentum is considered in the design of structures and vehicles to ensure stability and safety.