Physics · WORK, ENERGY AND POWER

A bullet of mass \( 40.0\text{ g} \) travelling at \( 250\text{ m s}^{-1} \) penetrates a thick wooden target of thickness \( 5.0\text{ cm} \) and emerges with only \( 16\% \) of its initial kinetic energy. The average resistive force exerted by the target on the bullet is:

1. A
   \( 2.1\times 10^4\text{ N} \)
2. B
   \( 2.5\times 10^4\text{ N} \)
3. C
   \( 1.8\times 10^4\text{ N} \)
4. D
   \( 4.2\times 10^4\text{ N} \)