If a 0.9 kg object hanging from a spring stretches it by 0.60 m, then by how much will the spring be stretched (in m) if a 1.8 kg object is suspended from it?

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