Calculate the change in the Kinetic energy of a moving body if its velocity is reduced to `1//3^(rd)` of the initial velocity.

Explanation

To calculate the change in kinetic energy of a moving body when its velocity is reduced to one-third of its initial velocity, we can follow these steps:

### Step 1: Define Initial Parameters
Let the initial velocity of the body be \( V \) and its mass be \( m \).

### Step 2: Calculate Initial Kinetic Energy
The formula for kinetic energy (KE) is given by:
\[
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