Physics · 2013
NEET 2013 · 5 May · Code W · Q7
An explosion breaks a rock into three parts in a horizontal plane. Two of them go off at right angles to each other. The first part of mass 1 kg…
An explosion breaks a rock into three parts in a horizontal plane. Two of them go off at right angles to each other. The first part of mass $\displaystyle 1$ kg moves with a speed of $\displaystyle 12 \mathrm{~ms}^{-1}$ and the second part of mass $\displaystyle 2$ kg moves with $\displaystyle 8 \mathrm{~ms}^{-1}$ speed. If the third part flies off with $\displaystyle 4 \mathrm{~ms}^{-1}$ speed, then its mass is :
Official answer
(2)
$\displaystyle 5$ kg
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NEET (UG) 2013 Physics question, with the answer from NTA’s final answer key. Where our answers come from.