A car trvelling at `108 km h^(-1)` has its speed reduced to `36 km h^(-1)` after traelling a distance of `2000 m` Find the retardation (assumed uniform) and time taken for this process.

Explanation

To solve the problem step by step, we will first convert the speeds from kilometers per hour to meters per second, then use the equations of motion to find the retardation and the time taken.

### Step 1: Convert the speeds from km/h to m/s
1. **Initial Speed (u)**: 108 km/h
\[ u = 108 \times \frac{1000}{3600} = 30 \, \text{m/s} \]

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