A body is dropped freely under gravity from the top of a tower of height 78.4 m. Calculate : (i) the time to reach the ground .
Take g = 9.8 m`s^(-2)`.

Explanation

To solve the problem of a body dropped freely from a height of 78.4 m under the influence of gravity, we can use the second equation of motion. Here’s the step-by-step solution:

### Step 1: Identify the known values
- Initial velocity (u) = 0 m/s (since the body is dropped)
- Height of the tower (h) = 78.4 m
- Acceleration due to gravity (g) = 9.8 m/s²

### Step 2: Write the second equation of motion
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