Choose the scientist who first performed Galileo's experiment on the moon :

Options

A. David Scott
B. Cavendishssss
C. Newton
D. none of these

Answer

To solve the question of which scientist first performed Galileo's experiment on the moon, we can follow these steps:

### Step 1: Understand Galileo's Experiment
Galileo's experiment demonstrated that two objects of different masses fall at the same rate in a vacuum. This means that, regardless of their mass, if dropped simultaneously, they will hit the ground at the same time.

### Step 2: Identify the Scientists
The question provides a list of scientists: David Scott, Cavendish, Newton, and others. We need to determine who among them conducted an experiment related to Galileo's findings on the moon.

### Step 3: Research Historical Context
- **David Scott**: He was an astronaut who participated in the Apollo 15 mission in 1971. During this mission, he conducted an experiment where he dropped a hammer and a feather on the moon to demonstrate that they would fall at the same rate, similar to Galileo's experiment.
- **Cavendish**: Known for his work on gravitational force and density of the Earth, but he did not perform the experiment on the moon.
- **Newton**: Famous for his laws of motion and universal gravitation, but he did not conduct the experiment on the moon.

### Step 4: Conclusion
Based on the information gathered, the scientist who first performed Galileo's experiment on the moon is **David Scott**.

### Final Answer
**David Scott**

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