1. [#731] More slider collisions Once again we have two sliders, masses m and m, on a horizontal air-track, so negligible horizontal forces, and vertical forces add to zero. The right hand mass is travelling to the right at speed 1:, being followed by the other at speed 31). A spring between them guarantees an elastic collision. After the collision, what are the velocities of the two sliders? Hint: what is the frame of reference that makes this into an easy problem? Speed of left hand mass after the collision Speed of right hand mass after the collision Please enter your answer in terms of the initial speeds of the two sliders and please enter very simple expressions for the two speeds separated by a comma. Example: a,b