Is the total mechanical energy conserved for a falling body if we include the effect of air resistance during its fall?

Explanation

To determine whether the total mechanical energy is conserved for a falling body when including the effect of air resistance, we can analyze the situation step by step.

### Step-by-Step Solution:

1. **Understanding Mechanical Energy**:
Mechanical energy is defined as the sum of kinetic energy (KE) and potential energy (PE) of an object. Mathematically, it can be expressed as:
\[
\text{Mechanical Energy} (ME) = KE + PE
...