A spherical satellite of radius 4.7 m and mass M = 195 kg is originally moving with velocity = < 2700, 0, 0 > m/s, and is originally rotating with an angular speed = 2 radians/second, in the direction shown in the diagram. A small piece of space junk of mass m = 4.1 kg is initially moving toward the satellite with velocity= < -2100, 0, 0 > m/s. The space junk hits the edge of the satellite at location C as shown in the diagram, and moves off with a new velocity = < -1200, 490, 0 > m/s. Both before and after the collision, the rotation of the space junk is negligible. MOMENTUM After the collision, what is the final momentum of the satellite? i tried this... system: junk and satellite so pf = pi pjunk-f + psat-f = pjunk-i + psat-i psat-f = (pjunk-i + psat-i)/ pjunk-f = ((mjunk*vjunk-i) + (msat*vsat-i))/ (mjunk*vjunk-f) = ((4.1 kg *<-2100,0,0> m/s) + (195 kg * <2700, 0 0> m/s))/ (<-1200, 490,0> m/s * 4.1 kg) = <-437, 0 , 0> what am i missing/doing wrong? thanks!