When we kick a stone, we get hurt. Due to which one of the following properties of stone it happens:-

Options

A. Inertia
B. Velocity
C. Reaction
D. Momentum

Explanation

To solve the question, "When we kick a stone, we get hurt. Due to which one of the following properties of stone it happens?", we need to analyze the situation using the concept of inertia.

### Step-by-Step Solution:

1. **Understanding the Situation**: When we kick a stone, we apply a force to it. The stone, having mass, will respond to this force.

2. **Identifying the Property**: The key property of the stone that comes into play here is its inertia. Inertia is defined as the tendency of an object to resist any change in its state of motion.

3. **Applying Newton's Third Law**: According to Newton's Third Law of Motion, for every action, there is an equal and opposite reaction. When we kick the stone (action), the stone exerts an equal and opposite force back on our foot (reaction).

4. **Result of the Reaction**: The stone's inertia means it resists the change in motion when we kick it. Therefore, the force we apply to the stone results in a reaction force that can cause us pain or hurt.

5. **Conclusion**: The reason we get hurt when we kick a stone is due to the inertia of the stone, which resists the change in its state of motion and exerts an equal force back on our foot.

### Final Answer:
The property of the stone that causes us to get hurt when we kick it is **inertia**.

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