On a very muddy football field, a 120 kg linebacker tackles

Last updated: 7/5/2022

On a very muddy football field, a 120 kg linebacker tackles an 85 kg halfback. Immediately before the collision, the linebacker is slipping with a velocity of 8.8 m/s north and the halfback is sliding with a velocity of 7.5 m/s east. What is the magnitude of the velocity at which the two players move together immediately after the collision? What is the direction of this velocity?