For the same kinetic energy of a body ,what should b the changes in its velocity if its mass is increased four times?

Explanation

To solve the problem of how the velocity of a body changes when its mass is increased four times while keeping the kinetic energy constant, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the formula for kinetic energy (KE)**:
The kinetic energy (KE) of an object is given by the formula:
\[
KE = \frac{1}{2} mv^2
...