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A person holdinga rifle (mass of person ...

A person holdinga rifle (mass of person and rifle together is 100kg) stands on a smooth surface and fires 10 shots horizontally, in5s. Each bullet has a mass of 10 g with a muzzle velocity of `800 ms^(-1).The final velocity acquired the person and the average force exerted on the person are:

A

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

B

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

C

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

D

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

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