Total energy of a body at rest at a height h from a point of reference is 75 J. What is its kinetic energy as it falls through a height h/2 ?

Explanation

To solve the problem, we need to analyze the energy transformations that occur as the body falls from a height \( h \) to a height \( \frac{h}{2} \).

### Step-by-Step Solution:

1. **Identify Total Energy at Height \( h \)**:
- The total energy \( E \) of the body at height \( h \) is given as 75 J.
- Since the body is at rest at this height, its kinetic energy (KE) is 0. Therefore, the total energy is entirely potential energy (PE).
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