Two cars are moving in same direction with speed of `40kmh^(-1)` Find the relative velocity of first car with another.

Explanation

To find the relative velocity of the first car (Car A) with respect to the second car (Car B), follow these steps:

### Step-by-Step Solution:

1. **Identify the Speeds of the Cars**:
Both cars are moving in the same direction with a speed of 40 km/h.

2. **Define the Relative Velocity**:
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