Knocking a nail into a wooden block with a hammer involves conversion between different forms of energy. Which of the following options present the correct order for this conversion?

Options

A. Chemical energy `rarr` (Sound energy+heat energy) `rarr` kinetic energy
B. Chemical energy `rarr` kinetic energy `rarr` (sound energy + heat energy)
C. Chemical energy `rarr` kinetic energy-heat energy
D. (Sound energy + heat energy) `rarr` kinetic energy `rarr` chemical energy

Explanation

To solve the question regarding the conversion of energy when knocking a nail into a wooden block with a hammer, we can break down the process into clear steps:

### Step-by-Step Solution:

1. **Identify the Initial Energy**:
When you hold the hammer, it has potential energy due to its position. However, in the context of the question, we can consider the energy involved when you strike the nail.

2. **Hammer Striking the Nail**:
When you swing the hammer and hit the nail, the potential energy of the hammer is converted into kinetic energy. This is the energy of motion that the hammer has as it moves towards the nail.

3. **Nail Penetrating the Wood**:
As the hammer strikes the nail, the kinetic energy from the hammer is transferred to the nail. This causes the nail to move and penetrate into the wooden block. Thus, the kinetic energy of the hammer is converted into kinetic energy of the nail.

4. **Heat Generation**:
As the nail penetrates the wood, friction occurs between the nail and the wood. This friction converts some of the kinetic energy into thermal energy (heat). The nail may become hot due to this heat generation.

5. **Sound Production**:
Additionally, when the hammer strikes the nail, sound energy is produced. This sound is a result of the impact and the vibrations created during the process.

6. **Final Energy Forms**:
Therefore, the energy conversions can be summarized as:
- **Chemical Energy (from the muscles) → Kinetic Energy (of the hammer) → Kinetic Energy (of the nail) → Heat Energy + Sound Energy**.

### Conclusion:
The correct order of energy conversion when knocking a nail into a wooden block with a hammer is:
- **Chemical Energy → Kinetic Energy → Heat Energy + Sound Energy**.