16. Two disks float on a horizontal, frictionless air table. Disk A has mass m, and collides with a stationary disk B of mass 2m. After the collision, the velocities of the two disks are: -3.01 +3.0 7 m/s and v, - 6.07-1.5 m/s. What was the velocity of the center of mass before the collision, in m/s ? (a) 7.07+2.0) (b) 9.07+1.5) (c) 3.07+3.0) (d) 4.51-0.75) (e) 5.0 i

16. Two disks float on a horizontal, frictionless air table. Disk A has mass m, and collides with a stationary disk B of mass 2m. After the collision, the velocities of the two disks are: -3.01 +3.0 7 m/s and v, - 6.07-1.5 m/s. What was the velocity of the center of mass before the collision, in m/s ? (a) 7.07+2.0) (b) 9.07+1.5) (c) 3.07+3.0) (d) 4.51-0.75) (e) 5.0 i