Throwing a rock at a wild polar bear, or engaging in any kind of aggressive behavior towards a wild animal, is highly discouraged and potentially dangerous. Interacting with wild animals, especially large and potentially dangerous ones like polar bears, should be approached with caution and respect for both your safety and the well-being of the animal.
In the specific scenario you described, it's difficult to predict exactly what would happen, as the bear's reaction could vary depending on various factors, including its behavior, proximity, and level of aggression. However, it's important to note that polar bears are powerful predators and can be extremely dangerous. They have sharp claws and strong jaws, and if they perceive a threat or are provoked, they may respond aggressively to defend themselves.
Intentionally throwing objects at a polar bear could be seen as a threat or an act of aggression, which may provoke the bear and lead to an escalated response. The bear may feel the need to defend itself and could potentially attack in self-defense. It's crucial to avoid such situations and instead prioritize safety by maintaining a safe distance from wild animals and respecting their natural habitats.
If you encounter a wild polar bear or any other potentially dangerous animal, it is recommended to contact local wildlife authorities or experts who are trained in handling such situations. They can provide guidance on how to minimize risks and ensure the safety of both humans and the animals involved.