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A person holding a rifle (mass of person...

A person holding a rifle (mass of person and rifle together is 100 kg) stands on a smooth surface and fires 10 shots horizontally, in 5s. Each bullet has a mass of 10 g with a muzzle velocity of 800 `ms^(-1)`. The final velocity acquired by the person and the average force exerted on the person are

A

`-1.6 ms^(-1), 8N`

B

`-0.08 ms^(-1),16N`

C

`-0.8 ms^(-1),16N`

D

`-1.6ms^(-1), 16N`

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