Q$4$: A $12\mathrm{.}0$ g bullet is fired horizontally into a $100$ g wooden block that is initially at rest on a frictionless horizontal surface and connected to a spring having spring constant $\backslash (150\backslash$mathrm$\{$~N$\}/\backslash$mathrm$\{$m$\}\backslash ).$ The bullet becomes embedded in the block. If the bullet$-$block system compresses the spring by a

General Physics I Due Date: Monday, November $\backslash (25^\{\backslash$text $\{$nd $\}\}\backslash )$ at $\backslash (11$: $30$ P M $\backslash )$

Figure $3$: Problem $2$b

maximum of $80\mathrm{.}0$ cm $,$ what was the speed of the bullet at impact with the block?