A playground has a small merry-go-round with radius 1.20 m. It’s moment of inertia is 151 m2 . A small child with mass 45.0 runs at a velocity of 3.00 m/ along a path tangent to the outer rim of the stationary merry-go-round and jumps on. Calculate the magnitude of the angular momentum of the child about the axis of rotation of the merry-go-round.