State any two quantities that are uniform in UCM.

Explanation

To answer the question about two quantities that are uniform in Uniform Circular Motion (UCM), we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Uniform Circular Motion (UCM)**:
- In UCM, an object moves in a circular path with a constant speed. This means that while the direction of the velocity vector changes, the magnitude of the velocity remains constant.

2. **Identify the First Quantity**:
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