Two cars of equal mass are traveling as shown in Figure P7.30 just before undergoing a c...

Two cars of equal mass are traveling as shown in Figure P7.30 just before undergoing a collision. Before the collision, one of the cars has a speed of 18 m/s along +x and the other has a speed of 25 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?