A passenger getting down from a moving bus, falls in the direction of the motion of the bus. This is is an example for

Options

A. 1. momentum
B. 2. second law of motion
C. 3. third law of motion
D. 4. inertia of motion

Explanation

To solve the question regarding why a passenger falls in the direction of the motion of a moving bus when getting down, we can analyze the situation using Newton's laws of motion, particularly the first law of motion, also known as the law of inertia.

### Step-by-Step Solution:

1. **Understanding the Situation**:
- A passenger is inside a moving bus. The bus is moving in a particular direction (let's say to the right).

2. **Passenger's Motion**:
- When the passenger decides to get down, they first move their feet out of the bus. At this moment, their feet come to rest relative to the ground.

3. **Inertia of the Upper Body**:
- However, the upper part of the passenger's body (head and torso) is still in motion in the direction of the bus (to the right). According to Newton's first law of motion, an object in motion will remain in motion unless acted upon by an external force.

4. **Feeling of a Pull**:
- As the lower body comes to rest, the upper body continues to move forward due to inertia. This creates a sensation of being pulled forward as the feet are no longer supporting the weight of the upper body.

5. **Resulting Fall**:
- Consequently, the passenger falls in the direction of the bus's motion (to the right) because the upper body wants to maintain its state of motion, while the lower body has stopped moving.

6. **Conclusion**:
- This phenomenon is an example of inertia, which is described by Newton's first law of motion. Therefore, the correct answer to the question is that this is an example of the law of inertia.

### Final Answer:
The passenger falling in the direction of the motion of the bus is an example of the law of inertia (Newton's first law of motion).

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