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   ocr: Forces in a collision When a pinball hits a target, the pinball creates a force called an action force that pushes it against the target. At the same time, the target produces a reaction force that pushes the pinball back outward. These action and reaction forces are equal 111 size but they act 1n opposite directions. The pinball's sudden jerk backward after it has hit the target 1S called the recoil. All objects that collide experience a recoil, no matter how big they are. The heavier the object, the smaller the recoil.