A child of mass 50 kg jumps onto the edge of a merry-go-round of mass 150 kg and radius...

A child of mass 50 kg jumps onto the edge of a merry-go-round of mass 150 kg and radius 2.0 m that is initially at rest as sketched in Figure 9.12. While in the air (during her jump), the child’s linear velocity in the direction tangent to the edge of the merry-go-round is 10 m/s. What is the angular velocity of the merry-go-round plus child after the child jumps onto the merry go- round?

(reference figure 9.12)