Pick the fundamental law of motion

Options

A. Newton's first law of motion
B. Newton's second law of motion
C. Newton's third law of motion
D. All laws of motion

Explanation

To determine the fundamental law of motion, we need to analyze the three laws of motion proposed by Sir Isaac Newton. Let's break down the process step by step:

### Step 1: Understand the Laws of Motion
1. **Newton's First Law of Motion**: This law states that an object at rest will remain at rest, and an object in motion will continue in motion with the same speed and in the same direction unless acted upon by an external force. This law introduces the concept of inertia.

2. **Newton's Second Law of Motion**: This law is often expressed as the formula \( F = ma \), where \( F \) is the force applied to an object, \( m \) is the mass of the object, and \( a \) is the acceleration produced. This law establishes a relationship between force, mass, and acceleration.

3. **Newton's Third Law of Motion**: This law states that for every action, there is an equal and opposite reaction. This means that forces always occur in pairs.

### Step 2: Identify the Fundamental Law
- The term "fundamental" refers to a law that is basic and not derived from other laws. It should provide a foundational understanding of motion.
- The second law, \( F = ma \), is significant because it quantitatively describes how forces affect the motion of objects. It can be applied universally to analyze the motion of any object.

### Step 3: Conclusion
- While all three laws are important, the second law of motion (Newton's Second Law) is considered the most fundamental because it encapsulates the relationship between force, mass, and acceleration in a single equation. This law can be used to derive the other laws and explains a wide range of physical phenomena.

### Final Answer
The fundamental law of motion is **Newton's Second Law of Motion**.

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