1. The problem statement, all variables and given/known data A 32-u oxygen molecule (O2) moving in the +x-direction at 580 m/s collides with an oxygen atom (mass 16 u) moving at 870 m/s at 27° to the x-axis. The particles stick together to form an ozone molecule. Find the ozone’s velocity. 2. Relevant equations 3. The attempt at a solution m1 = 32 u, v1 = 580i m/s, m2 = 16 u, v2 =870(cos(27) i + sin(27) j) m/s m1 v1 + m2 v2 =(m1 + m2)V V = (m1 v1+ m2 v2)/(m1+ m2) = (645 i) m/s Answer = 645 i m/s Does that look right?