velocity is taken on ______ axis In velocity-time graph.

Explanation

### Step-by-Step Solution:

1. **Understanding the Velocity-Time Graph**:
- A velocity-time graph is a graphical representation where velocity is plotted against time.

2. **Identifying the Axes**:
- In any graph, the vertical axis is typically referred to as the y-axis, and the horizontal axis is referred to as the x-axis.

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