• # question_answer 31) If the increase in kinetic energy of a body is 21 % then the increase in the momentum is:- A)  22 %         B)  44%C)  10%            D)  300%

$\frac{{{P}_{2}}-{{P}_{1}}}{{{P}_{1}}}=\frac{\sqrt{{{E}_{2}}}-\sqrt{{{E}_{1}}}}{\sqrt{{{E}_{1}}}}$