Question $6$

a$.$ If a $5$ kg object experiences a $10$ N force for a duration of $0\mathrm{.}10$ s $,$ then what is the momentum change of the object? $[3$ marks$]$

b$.$ A $10\mathrm{.}0$ g bullet is stopped in a stationery block of wood $(\backslash (\backslash$mathrm$\{$m$\}=5\mathrm{.}00\backslash$mathrm$\{$~kg$\}\backslash ))$ as shown in Figure Q$6.$ The speed of the bullet$-$plus$-$wood combination immediately after the collision is $\backslash (0\mathrm{.}600\backslash$mathrm$\{$~m$\}/\backslash$mathrm$\{$s$\}\backslash ).$ What was the original speed of the bullet? $[7$ marks$]$

Figure Q$6$