A $250$ g car and a $50$g mass are connected by a light stringwove the foot an hte car s on a Ta ate The art tive aninitial velocity of $0\mathrm{.}60$ m$/$s away from the pulley. Friction between the car and the table is $0\mathrm{.}15$ N$.$ What is the speed of the $50$ g mass when it hits the floor?