A shell of mass 200g is ejected from a g...

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

A

`100ms^(-1)`

B

`80ms^(-1)`

C

`40ms^(-1)`

D

`120ms^(-1)`

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The correct Answer is:

a

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