Physics · 2013
NEET 2013 · 18 May · Code Y · Q94
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 5 s. Each…
A person holding a rifle (mass of person and rifle together is $\displaystyle 100$ kg) stands on a smooth surface and fires $\displaystyle 10$ shots horizontally, in $\displaystyle 5$ s. Each bullet has a mass of $\displaystyle 10$ g with a muzzle velocity of $\displaystyle 800 \mathrm{~ms}^{-1}$. The final velocity acquired by the person and the average force exerted on the person are :
Official answer
(4)
$\displaystyle -0.8 \mathrm{~ms}^{-1} ; 8 \mathrm{~N}$
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NEET (UG) 2013 Physics question, with the answer from NTA’s final answer key. Where our answers come from.