I need some help trying to solve this question

A 76.1 kg linebacker (X) is running at 8.03 m/s directly toward the sideline of a football field. He tackles a 98.2 kg running back (O) moving at 9.05 m/s straight toward the goal line, perpendicular to the original direction of the linebacker. As a result of the collision, both players momentarily leave the ground and go out-of-bounds at an angle d relative to the sideline, as shown in the diagrams. Before impact After impact What is the common speed of of the players immediately after their impact? m/s Uf What is the angle d of their motion relative to the sideline? D =