Arcade game machines achieve dynamic in-game physics for sports simulations through a combination of hardware capabilities and sophisticated software algorithms. These systems rely on real-time processing to simulate realistic movements, collisions, and interactions, ensuring an immersive player experience.

1. Physics Engines: Modern arcade machines use dedicated physics engines that calculate trajectories, forces, and collisions in real time. These engines are optimized for performance, balancing accuracy with smooth gameplay.

2. Hardware Acceleration: High-performance processors and GPUs enable rapid calculations, allowing for fluid animations and responsive controls. Some machines also incorporate motion sensors or force feedback to enhance realism.

3. Predefined Animations & Blending: For complex actions like tackles or jumps, arcade games often blend predefined animations with dynamic physics. This hybrid approach maintains visual polish while preserving physical accuracy.

4. Simplified Models: To ensure fast processing, sports simulations may use simplified collision models or reduced physics fidelity, prioritizing fun and responsiveness over hyper-realism.

5. Player Input Integration: Dynamic physics adapt to player actions, such as swinging a bat or throwing a ball, by adjusting variables like speed and angle in real time.

By leveraging these techniques, arcade sports games deliver engaging, fast-paced experiences that feel authentic without sacrificing performance.