166. If the impulse of a bullet in SI units increases from 20 to 22, by what percentage does the kinetic energy of the bullet increase? (1) $15$ (2) $17$ (3) $21$ (4) $42$
\textbf{166.} If the impulse of a bullet in SI units increases from 20 to 22, by what percentage does the kinetic energy of the bullet increase?
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(1) $15$ \hfill (2) $17$ \hfill (3) $21$ \hfill (4) $42$
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