how does the work needed to stretch a spring 2 cm compared to the work needed to stretch it one cm does it double , stay the same, or triple and if so how many times?

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