Two cars of equal mass are traveling as shown in the figure below just before undergoing a collision. Before the collision, one of the cars has a speed of 12 m/s along +x, and the other has a speed of 35 m/s along +y. The cars lock bumpers and then slide away together after the collision. What are the magnitude and direction of their final velocity? magnitude m/s direction ° counterclockwise from the +x-axis