Two cars $\backslash ($ A $\backslash )$ and $\backslash ($ B $\backslash )$ have a mass of $2\mathrm{.}2$ Mg and $1\mathrm{.}2$ Mg $,$ respectively.

Part A

Determine the magnitudes of $\backslash (\backslash$mathbf$\{$v$\}\_\{$A$\}\backslash )$ and $\backslash (\backslash$mathbf$\{$v$\}\_\{$B$\}\backslash )$ if the cars collide and stick together while moving with a common speed of $\backslash (50\backslash$mathrm$\{$~km$\}/\backslash$mathrm$\{$h$\}\backslash )$ in the direction shown.$($ Figure $1)$

Enter your answers numerically separated by a comma.