Question $2$

$0\mathrm{.}05$ pts

A bullet with a mass of $12$ g moving horizontally strikes a fixed block of wood and penetrates a distance of $5\mathrm{.}2$ cm $.$ The speed of the bullet just before the collision is $640\frac{m}{s}.$ The average force that the wood exerted on the bullet was

$4\mathrm{.}7{10}^{4}N$

$74$ N

None of these is correct.

$4\mathrm{.}7{10}^{6}N$

unknown; the mass of the wood is required