A shell of mass 200 g is ejected from a gun of mass 4 kg by an explosion

A shell of mass 200 g is ejected from a gun of mass 4 kg by an explosion that generates 1.05 kJ if energy. This initial velocity of the shell is:

Options

(a) 100 ms⁻¹
(b) 80 ms⁻¹
(c) 40 ms⁻¹
(d) 120 ms⁻¹

Correct Answer:

100 ms⁻¹

Explanation:

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