1. The problem statement, all variables and given/known data If a particle of mass 5.6 kg is moving east at 10 m/s and a particle of mass 17 kg is moving west at 10 m/s, what is the speed of the center of mass of the pair? 2. Relevant equations Not sure how it would relate, but to find the center of mass = (m1x1 + m2x2)/(m1+m2) 3. The attempt at a solution I can't figure out where to start. Our homework does not come from our textbook, so our textbook doesn't have any relevant equations/solutions for this problem.