In a playground there is a small merry-go-round of mass 176kg and radius 1.22m that is not moving. The radius of gyration is 91.6cm. A girl of mass 44.3kg runs at a speed of 2.92 m/s tangent to the rim of the merry-go-round and jumps on it. Neglect friction between the bearings and the shaft of the merry-go-round and find the angular speed of the merry-go-round and girl.

During the apollo moon missions, astronauts were concerned about the effects of newton's third law of motion when: o a. they ejected waste water, because they were concerned that it would push them off course. o b. they reentered earth's atmosphere, because they were carrying heavy moon rocks. o c. they took off from earth, because a large force was required to generate large acceleration. o d. they detected incoming space debris, because the inertia of the debris could damage their ship.