Alarge jet flying overhead is low enough so that a man on the ground can hear its engines. the man sees the jet before he hears the engines because

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