Momentum in 2D is a physical quantity that describes the motion of an object in two dimensions. It is the product of an object's mass and its velocity in the x and y directions.
In a closed system, the total momentum in the x and y directions remains constant, meaning that the initial momentum will be equal to the final momentum. This is known as the law of conservation of momentum.
If there is an external force acting on an object in 2D, its momentum will change. This change in momentum is directly proportional to the force applied and the amount of time it acts on the object.
To calculate momentum in 2D, you can use the formula p = mv, where p is momentum, m is mass, and v is velocity in the x and y directions.
Some real-world examples of troubles with momentum in 2D include collisions between objects, projectiles launched at an angle, and objects moving on a curved path. In these situations, it can be challenging to accurately predict the momentum of the objects involved.