Name the two kinds of inertia.

Explanation

**Step-by-Step Solution:**

1. **Understanding Inertia**: Inertia is the property of an object to resist changes in its state of motion. It is a fundamental concept in physics that describes how objects behave when forces are applied to them.

2. **Identifying the Two Kinds of Inertia**:
- **Inertia of Rest**: This type of inertia refers to an object's tendency to remain at rest unless acted upon by an external force. For example, a book lying on a table will stay there until someone picks it up.
- **Inertia of Motion**: This type of inertia refers to an object's tendency to continue moving at a constant velocity unless acted upon by an external force. For instance, a soccer ball rolling on the ground will keep rolling until friction or another force stops it.

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