1. The problem statement, all variables and given/known data Consider an object consisting of two balls connected by a spring, whose stiﬀness is 400N/m. The object has been thrown through the air and is rotating and vibrating as it moves. At a particular instant the spring is stretched 0.3m, and the two balls at the ends of the spring have the following masses and velocities: m1= 1.4kg v1= <5.5, -5.5, 0> m2=3.4 kg v2=<-13.5, 8, 0> What is x and y components of V(center mass)? What is K total=? 2. Relevant equations Ktot= K trans + K rel Psys= M(total)V(cm) U=1/2 kx^2 Ke=1/2 mv^2 Ke= 1/2 I w^2 3. The attempt at a solution: I tried to just solve for center of mass and apply x and y velcoities but it didnt work.