How do you determine if a constant velocity is fast or slow when compared to another velocity? (constant velocity)

What is the angular momentum of the bar about the axle?

Ahockey player of mass 82 kg is traveling north with a velocity of 4.1 meters per second he collides with the 76 kg player traveling east at 3.4 meters per second if the two players locked together momentarily in what direction will they be going immediately after the collision how fast will they be moving

Acar is traveling 35 mph on a smooth surface . if a balanced force is applied to the car what happens?