An external force is required to keep a body in uniform motion This statement was given by.

Options

A. Aristotle
B. Newton
C. Archimedes
D. Einstein

Answer

To solve the question, we need to identify who made the statement regarding the need for an external force to keep a body in uniform motion. The statement relates to the principles of motion and forces.

### Step-by-Step Solution:

1. **Understanding the Statement**: The statement "An external force is required to keep a body in uniform motion" suggests that there is a need for a force to maintain motion. This is contrary to the principle of inertia, which states that a body in motion will remain in motion unless acted upon by an external force.

2. **Identifying the Laws of Motion**: The statement can be associated with Newton's First Law of Motion, which states that an object will remain at rest or in uniform motion in a straight line unless acted upon by a net external force.

3. **Evaluating the Options**:
- **S. Total**: This does not correspond to any well-known physicist or law.
- **Newton**: Refers to Sir Isaac Newton, who formulated the laws of motion.
- **Archimedes**: Known for his work in buoyancy and hydrostatics, not for laws of motion.
- **Einstein**: Known for the theory of relativity, not specifically for laws regarding uniform motion.

4. **Conclusion**: The correct answer is **Newton**, as he is the one who articulated the laws of motion, including the principle that an external force is necessary to change the state of motion of an object.

### Final Answer:
The statement "An external force is required to keep a body in uniform motion" was given by **Newton**.