A shell of mass `200g` is ejected from a gun of mass `4 kg` by an explosion that generate `1.05 kJ` of energy. The initial velocity of the shell is

Options

A. `100 ms^(-1)`
B. `80 ms^(-1)`
C. `40 ms^(-1)`
D. `120 ms^(-1)`

Explanation

To find the initial velocity of the shell ejected from the gun, we can use the principle of conservation of energy. The kinetic energy gained by the shell is equal to the energy generated by the explosion.

### Step-by-Step Solution:

1. **Convert the mass of the shell to kilograms**:
\[ m_{\text{shell}} = 200 \text{ g} = 0.2 \text{ kg} \]
...