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

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

A

`100 ms^-1`

B

`80 ms^-1`

C

`40 ms^-1`

D

`120 ms^-1`

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