a 1kg hockey puck travelling at 2m/s collides with a 2kg hockey puck. the two pucks fly apat after the collision what is the velocity of 2kg puck Share with your friends Share 0 Shobhit Mittal answered this Dear Student,your question is incomplete you had notmention is the collision is head on or oblique , elesttic or in elastic initial speed of 2kg .i am assuming to be zero velocity of 2kg before collision and elastic collision .use formula v=2mum+m'velocity of 2 kg =2*1*22+1=43 m/sREgards 0 View Full Answer