A stone is dropped freely in a river from a bridge. It takes 5 s to touch the water surface in the river. Calculate : the height of the bridge from the water level .

Explanation

To solve the problem of finding the height of the bridge from which a stone is dropped into a river, we can use the second equation of motion. Here are the steps to find the solution:

### Step-by-Step Solution:

1. **Identify the Given Information**:
- Time taken (t) = 5 seconds
- Initial velocity (u) = 0 m/s (since the stone is dropped)
- Acceleration due to gravity (g) = 9.8 m/s² (approximate value)
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