Name the factor on which the inertia of a body depends and state how does it depend on the factor stated above.

Explanation

**Step-by-Step Solution:**

1. **Understanding Inertia:**
- Inertia is defined as the tendency of a body to resist changes in its state of motion. This means that a body at rest will remain at rest, and a body in motion will continue to move at a constant velocity unless acted upon by an external force.

2. **Identifying the Factor:**
- The factor on which the inertia of a body depends is **mass**.

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