An athlete does not come to rest immediately after crossing the winning line due to the -

Options

A. Inertia of rest
B. Inertia of motion
C. Inertia of direction
D. None of these

Answer

To solve the question regarding why an athlete does not come to rest immediately after crossing the winning line, we need to understand the concept of inertia and its implications on motion.

### Step-by-Step Solution:

1. **Understanding Inertia**:
- Inertia is a property of matter that describes an object's resistance to changes in its state of motion. An object at rest stays at rest, and an object in motion stays in motion unless acted upon by an external force.

2. **Application to the Athlete**:
- When the athlete is running, they are in a state of motion. As they cross the winning line, their body still possesses the momentum from running.

3. **Crossing the Winning Line**:
- Upon crossing the line, the athlete does not immediately stop because their body wants to continue in its state of motion due to inertia. The legs are still moving forward while the body is trying to come to a stop.

4. **External Forces**:
- The athlete will eventually come to a stop when external forces (like friction from the ground) act on them. However, until those forces are sufficient to counteract their momentum, they will continue moving forward.

5. **Conclusion**:
- Therefore, the reason the athlete does not come to rest immediately after crossing the winning line is due to inertia. The inertia of motion keeps them moving forward until external forces bring them to a stop.

### Final Answer:
The athlete does not come to rest immediately after crossing the winning line due to **inertia of motion**.

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