A 85 kg running back is running north at 8.2 m/s. A 124 kg linebacker running south at 6.5 m/s grabs onto and tackles the running back. What is the velocity of the combined players after the collision? Question 1 Answer a. 7.2 m/s north b. .52 m/s north c. .52 m/s south d. 7.2 m/s south