A body of mass 10 kg is dropped from a height of 20 m. (Take g = 10 `3/s^2)`
Its kinetic energy when it hits the ground.

Explanation

To find the kinetic energy of a body when it hits the ground after being dropped from a height, we can use the principle of conservation of energy. The potential energy at the height will convert into kinetic energy just before it hits the ground.

### Step-by-Step Solution:

1. **Identify the given values**:
- Mass of the body (m) = 10 kg
- Height (h) = 20 m
- Acceleration due to gravity (g) = 10 m/s²
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