Physical independence of force is a consequence ofSelect an answerAThird law of motionBSecond las of motionCFirst law of motionDAll of these

To determine the correct answer, let's analyze the options given:

1. Third law of motion: This law states that for every action, there is an equal and opposite reaction. It outlines the concept of mutual forces between two bodies but doesn't solely define the independence of forces.

2. Second law of motion: This law describes the relationship between force and motion, stating that $F = ma$ (force equals mass times acceleration). While this law addresses how motion changes in response to forces, it does not directly relate to the independence of forces.

3. First law of motion: This is also known as the law of inertia, which states that an object will remain at rest or in uniform motion unless acted upon by a net external force. This law reflects the concept of physical independence of force by implying that forces act independently on objects.

4. All of these: This option suggests that all the laws contribute to the concept.

Conclusion

Considering the definitions:

• The first law of motion primarily emphasizes the independence of forces acting on an object, supporting the idea that the forces can be considered separately.
• The third law of motion illustrates the relationship between interacting forces, and the second law describes how these forces affect motion.

Thus, the most accurate choice that directly relates to the physical independence of force is C: First law of motion.

Final Answer

C - First law of motion.