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

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

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