In a collision involving two objects, such as the red and green balls in your simulation, the following generally happens regarding momentum, especially when we consider an elasticity of 100% (perfectly elastic collision):
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Momentum of the Red Ball After the Collision: After the collision, the red ball will either gain or lose momentum depending on the angle and speed with which it strikes the green ball. If it transfers motion efficiently, its momentum may decrease if it imparts a significant amount to the green ball.
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Momentum of the Green Ball After the Collision: The momentum of the green ball will change as well. If it was initially at rest or moving slower than the red ball, its momentum will likely increase as it acquires energy from the collision, thereby speeding up and moving in the direction the red ball was initially traveling.
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Total Momentum of Both Balls: The principle of conservation of momentum states that the total momentum of the system (both the red and green balls) before the collision is equal to the total momentum after the collision. Therefore, regardless of how momentum is transferred between the two balls, the total momentum of the red and green balls combined remains constant.
In summary, while individual momenta may change, the total momentum remains constant before and after the collision due to the conservation of momentum principle in elastic collisions.
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